diff --git a/app/src/main/res/values-ar/strings.xml b/app/src/main/res/values-ar/strings.xml
index 938f0dbc081..5cf88b6abee 100644
--- a/app/src/main/res/values-ar/strings.xml
+++ b/app/src/main/res/values-ar/strings.xml
@@ -23,13 +23,13 @@
   <string name="audio_play_description">تشغيل الصوت</string>
   <string name="audio_pause_description">إيقاف الصوت مؤقتًا</string>
   <string name="audio_unavailable_in_selected_language">صوت %s غير متوفر.</string>
-  <string name="audio_language_select_dialog_okay_button">موافق</string>
+  <string name="audio_language_select_dialog_okay_button" fuzzy="true">موافق</string>
   <string name="audio_language_select_dialog_cancel_button">إلغاء</string>
   <string name="audio_language_select_dialog_title">لغة الصوت</string>
   <string name="audio_dialog_offline_title">غير متصل بالإنترنت</string>
   <string name="audio_dialog_offline_message">من فضلك تأكد من وجود اتصال بالإنترنت عن طريق شبكة الوايفاي أو بيانات الهاتف، ثم حاول مرة أخرى.</string>
-  <string name="audio_dialog_offline_positive">حسنًا</string>
-  <string name="cellular_data_alert_dialog_okay_button">موافق</string>
+  <string name="audio_dialog_offline_positive" fuzzy="true">حسنًا</string>
+  <string name="cellular_data_alert_dialog_okay_button" fuzzy="true">موافق</string>
   <string name="cellular_data_alert_dialog_cancel_button">إلغاء</string>
   <string name="cellular_data_alert_dialog_title">متصل بالإنترنت عن طريق بيانات الهاتف</string>
   <string name="cellular_data_alert_dialog_description">تشغيل الصوت عبر الإنترنت قد يستخدم الكثير من بيانات الهاتف.</string>
@@ -168,11 +168,11 @@
   <string name="number_error_starting_with_floating_point">من فضلك إبدأ إجابتك برقم (0 او 0.5 على سبيل المثال)</string>
   <string name="number_error_invalid_format">من فضلك قم بإدخال رقم صالح.</string>
   <string name="number_error_larger_than_fifteen_characters">يمكن أن تحتوي الإجابة على 15 رقمًا (0-9) على الأكثر أو الرموز (. أو -)</string>
-  <string name="ratio_error_invalid_chars">من فضلك قم بكتابة نسبة تتكون من أرقام مفصولة بنقطتين رأسيتين (1:2 أو 1:2:3 على سبيل المثال).</string>
-  <string name="ratio_error_invalid_format">من فضلك أدخل نسبة صحيحة (1:2 أو 1:2:3 على سبيل المثال)</string>
-  <string name="ratio_error_invalid_colons">إجابتك تحتوي على نقطتين رأسيتين (:) متتاليتين.</string>
-  <string name="ratio_error_invalid_size">عدد الحدود لا يساوي العدد المطلوب.</string>
-  <string name="ratio_error_includes_zero">لا يمكن أن تحتوي النسب على 0 كعنصر.</string>
+  <string name="ratio_error_invalid_chars" fuzzy="true">من فضلك قم بكتابة نسبة تتكون من أرقام مفصولة بنقطتين رأسيتين (1:2 أو 1:2:3 على سبيل المثال).</string>
+  <string name="ratio_error_invalid_format" fuzzy="true">من فضلك أدخل نسبة صحيحة (1:2 أو 1:2:3 على سبيل المثال)</string>
+  <string name="ratio_error_invalid_colons" fuzzy="true">إجابتك تحتوي على نقطتين رأسيتين (:) متتاليتين.</string>
+  <string name="ratio_error_invalid_size" fuzzy="true">عدد الحدود لا يساوي العدد المطلوب.</string>
+  <string name="ratio_error_includes_zero" fuzzy="true">لا يمكن أن تحتوي النسب على 0 كعنصر.</string>
   <string name="unknown_size">الحجم مجهول</string>
   <string name="size_bytes">%s بايت</string>
   <string name="size_kb">%s ك.ب</string>
@@ -180,7 +180,7 @@
   <string name="size_gb">%s ج.ب</string>
   <string name="correct">صحيح!</string>
   <string name="topic_prefix">الموضوع: %s</string>
-  <plurals name="chapter_count">
+  <plurals name="chapter_count" fuzzy="true">
     <item quantity="zero">و لا فصل</item>
     <item quantity="one">فصلًا واحدًا</item>
     <item quantity="two">فصلان</item>
@@ -188,7 +188,7 @@
     <item quantity="many">%s من الفصول</item>
     <item quantity="other">%s من الفصول</item>
   </plurals>
-  <plurals name="story_count">
+  <plurals name="story_count" fuzzy="true">
     <item quantity="zero">و لا قصة</item>
     <item quantity="one">قصة واحدة</item>
     <item quantity="two">قصتان</item>
@@ -204,7 +204,7 @@
     <item quantity="many">%s فصول مكتملة من %s</item>
     <item quantity="other">%s فصول مكتملة من %s</item>
   </plurals>
-  <plurals name="lesson_count">
+  <plurals name="lesson_count" fuzzy="true">
     <item quantity="zero">و لا درس</item>
     <item quantity="one">درسًا واحدًا</item>
     <item quantity="two">درسان</item>
@@ -212,7 +212,7 @@
     <item quantity="many">%s درس</item>
     <item quantity="other">%s درس</item>
   </plurals>
-  <plurals name="completed_story_count">
+  <plurals name="completed_story_count" fuzzy="true">
     <item quantity="zero">و لا قصة مكتملة</item>
     <item quantity="one">قصة واحدة مكتملة</item>
     <item quantity="two">قصتان مكتملتان</item>
@@ -220,7 +220,7 @@
     <item quantity="many">%s قصة مكتملة</item>
     <item quantity="other">%s قصة مكتملة</item>
   </plurals>
-  <plurals name="ongoing_topic_count">
+  <plurals name="ongoing_topic_count" fuzzy="true">
     <item quantity="zero">و لا موضوع في تقدم</item>
     <item quantity="one">موضوع واحد في تقدم</item>
     <item quantity="two">موضوعان في تقدم</item>
@@ -350,7 +350,7 @@
   <string name="profile_picture_edit_alert_dialog_choose_from_library">اختيار من المعرض</string>
   <string name="profile_rename_activity_title">إعادة تسمية الملف الشخصي</string>
   <string name="profile_rename_label">الاسم الجديد</string>
-  <string name="profile_rename_save">حفظ</string>
+  <string name="profile_rename_save" fuzzy="true">حفظ</string>
   <string name="profile_reset_pin_activity_title">إعادة ضبط رقم التعريف الشخصي</string>
   <string name="profile_reset_pin_main">أدخل رقم تعريف شخصي جديد للمستخدم كي يستخدمه عند الدخول إلى ملفه الشخصي.</string>
   <string name="profile_reset_pin_user_pin_label">رقم تعريف شخصي مكون من 3 أرقام</string>
@@ -383,12 +383,12 @@
   <string name="app_last_update_date">تم تثبيت آخر إصدار في %s. قم باستخدام رقم الإصدار في الأعلى للإبلاغ عن أعطال التطبيق.</string>
   <string name="app_version_activity_title">إصدار التطبيق</string>
   <string name="app_language_activity_title">لغة التطبيق</string>
-  <string name="audio_language_activity_title">لغة الصوت الافتراضية</string>
+  <string name="audio_language_activity_title" fuzzy="true">لغة الصوت الافتراضية</string>
   <string name="reading_text_size_activity_title">حجم النص المقروء</string>
   <string name="title_reading_text_size">حجم النص المقروء</string>
   <string name="story_text_will_look_like_this">سيظهر نص القصة بهذا الشكل.</string>
   <string name="constant_string_for_text_size">أ</string>
-  <string name="audio_language">الصوت الافتراضي</string>
+  <string name="audio_language" fuzzy="true">الصوت الافتراضي</string>
   <string name="app_language">لغة التطبيق</string>
   <string name="reading_text_size">حجم النص المقروء</string>
   <string name="reading_text_size_small">صغير</string>
@@ -432,7 +432,6 @@
   <string name="reveal">إظهار</string>
   <string name="just_now">الآن</string>
   <string name="last_logged_in_recently">حديثاً</string>
-  <string name="time_ago">منذ %s</string>
   <string name="yesterday">أمس</string>
   <string name="return_to_topic">العودة إلى الموضوع</string>
   <string name="return_to_lesson">العودة إلى الدرس</string>
@@ -445,36 +444,12 @@
   <string name="up_button_disabled">أعلى</string>
   <string name="down_button_disabled">أسفل</string>
   <string name="profile_last_visited">%s %s</string>
-  <plurals name="minutes">
-    <item quantity="zero">و لا دقيقة</item>
-    <item quantity="one">دقيقة واحدة</item>
-    <item quantity="two">دقيقتان</item>
-    <item quantity="few">%s دقيقة</item>
-    <item quantity="many">%s دقيقة</item>
-    <item quantity="other">%s دقيقة</item>
-  </plurals>
-  <plurals name="hours">
-    <item quantity="zero">و لا ساعة</item>
-    <item quantity="one">ساعة واحدة</item>
-    <item quantity="two">ساعتان</item>
-    <item quantity="few">%s ساعة</item>
-    <item quantity="many">%s ساعة</item>
-    <item quantity="other">%s ساعة</item>
-  </plurals>
-  <plurals name="days">
-    <item quantity="zero">و لا يوم</item>
-    <item quantity="one">يوم واحدة</item>
-    <item quantity="two">يومان</item>
-    <item quantity="few">%s يوم</item>
-    <item quantity="many">%s يوم</item>
-    <item quantity="other">%s يوم</item>
-  </plurals>
   <string name="topic_revision_recyclerview_tag">topic_revision_recyclerview_tag</string>
   <string name="ongoing_recycler_view_tag">ongoing_recycler_view_tag</string>
   <string name="item_selection_text">برجاء اختيار خيار واحد على الأقل.</string>
-  <string name="unsupported_app_version_dialog_title">إصدار تطبيق غير مدعوم</string>
-  <string name="unsupported_app_version_dialog_message">هذا الإصدار من التطبيق لم يعد مدعومًا. من فضلك قم بتحديث التطبيق من خلال متجر بلاي (Play Store)</string>
-  <string name="unsupported_app_version_dialog_close_button_text">إغلاق التطبيق</string>
+  <string name="unsupported_app_version_dialog_title" fuzzy="true">إصدار تطبيق غير مدعوم</string>
+  <string name="unsupported_app_version_dialog_message" fuzzy="true">هذا الإصدار من التطبيق لم يعد مدعومًا. من فضلك قم بتحديث التطبيق من خلال متجر بلاي (Play Store)</string>
+  <string name="unsupported_app_version_dialog_close_button_text" fuzzy="true">إغلاق التطبيق</string>
   <string name="splash_screen_developer_label">بناء المطور</string>
   <string name="splash_screen_alpha_label">ألفا</string>
   <string name="splash_screen_beta_label">بيتا</string>
@@ -486,8 +461,8 @@
   <string name="general_availability_notice_dialog_message">مرحبًا! يتم الآن تحديث تطبيقك إلى إصدار التوفر العام. إذا واجهت مشاكل أثناء استخدام التطبيق ، أو كانت لديك أسئلة ، فيرجى الاتصال بنا على android-feedback@oppia.org.</string>
   <string name="general_availability_notice_dialog_do_not_show_again_text">لا تظهر هذه الرسالة مرة أخرى</string>
   <string name="general_availability_notice_dialog_close_button_text">نعم</string>
-  <string name="ratio_content_description_separator">إلى</string>
-  <string name="ratio_default_hint_text">أدخل نسبة في الصيغة س:ص.</string>
+  <string name="ratio_content_description_separator" fuzzy="true">إلى</string>
+  <string name="ratio_default_hint_text" fuzzy="true">أدخل نسبة في الصيغة س:ص.</string>
   <string name="text_input_default_hint_text">انقر هنا لإدخال نص.</string>
   <string name="smallest_text_size_content_description">أصغر حجمًا للنص</string>
   <string name="largest_text_size_content_description">أكبر حجمًا للنص</string>
diff --git a/app/src/main/res/values-pcm-rNG/strings.xml b/app/src/main/res/values-pcm-rNG/strings.xml
index 616d6e03f76..26c2a9af024 100644
--- a/app/src/main/res/values-pcm-rNG/strings.xml
+++ b/app/src/main/res/values-pcm-rNG/strings.xml
@@ -19,13 +19,13 @@
   <string name="audio_play_description">Play di audio</string>
   <string name="audio_pause_description">Pause di audio</string>
   <string name="audio_unavailable_in_selected_language">%s audio no dey available.</string>
-  <string name="audio_language_select_dialog_okay_button">OK</string>
+  <string name="audio_language_select_dialog_okay_button" fuzzy="true">OK</string>
   <string name="audio_language_select_dialog_cancel_button">Cancel am</string>
   <string name="audio_language_select_dialog_title">Audio Language</string>
   <string name="audio_dialog_offline_title">You dey offline</string>
   <string name="audio_dialog_offline_message">Make sure sey Wi-Fi or mobile data dey on, den try am again.</string>
-  <string name="audio_dialog_offline_positive">OK</string>
-  <string name="cellular_data_alert_dialog_okay_button">OK</string>
+  <string name="audio_dialog_offline_positive" fuzzy="true">OK</string>
+  <string name="cellular_data_alert_dialog_okay_button" fuzzy="true">OK</string>
   <string name="cellular_data_alert_dialog_cancel_button">Cancel am</string>
   <string name="cellular_data_alert_dialog_title">Na your data you dey use now</string>
   <string name="cellular_data_alert_dialog_description">Playing di audio go use plenti mobile data.</string>
@@ -164,11 +164,11 @@
   <string name="number_error_starting_with_floating_point">Abeg start your ansa with nomba (e.g.,”0” for 0.5).</string>
   <string name="number_error_invalid_format">Abeg put correct nomba.</string>
   <string name="number_error_larger_than_fifteen_characters">Di ansa fit get at most 15 digits (0–9) or sign (. or -).</string>
-  <string name="ratio_error_invalid_chars">Abeg write a ratio wey get nomba separated by colons (e.g. 1:2 or 1:2:3).</string>
-  <string name="ratio_error_invalid_format">Abeg enter a valid ratio (e.g. 1:2 or 1:2:3).</string>
-  <string name="ratio_error_invalid_colons">Your ansa get two colons (:) next to each other.</string>
-  <string name="ratio_error_invalid_size">Nomba of terms no dey equal to di required terms.</string>
-  <string name="ratio_error_includes_zero">Ratios no suppose get 0 as an element.</string>
+  <string name="ratio_error_invalid_chars" fuzzy="true">Abeg write a ratio wey get nomba separated by colons (e.g. 1:2 or 1:2:3).</string>
+  <string name="ratio_error_invalid_format" fuzzy="true">Abeg enter a valid ratio (e.g. 1:2 or 1:2:3).</string>
+  <string name="ratio_error_invalid_colons" fuzzy="true">Your ansa get two colons (:) next to each other.</string>
+  <string name="ratio_error_invalid_size" fuzzy="true">Nomba of terms no dey equal to di required terms.</string>
+  <string name="ratio_error_includes_zero" fuzzy="true">Ratios no suppose get 0 as an element.</string>
   <string name="unknown_size">Size wey dey no know</string>
   <string name="size_bytes">%s Bytes</string>
   <string name="size_kb">%s KB</string>
@@ -176,11 +176,11 @@
   <string name="size_gb">%s GB</string>
   <string name="correct">You get am!</string>
   <string name="topic_prefix">Topic: %s</string>
-  <plurals name="chapter_count">
+  <plurals name="chapter_count" fuzzy="true">
     <item quantity="one">1 Chapter</item>
     <item quantity="other">%s Chapters</item>
   </plurals>
-  <plurals name="story_count">
+  <plurals name="story_count" fuzzy="true">
     <item quantity="one">1 Story</item>
     <item quantity="other">%s Stories</item>
   </plurals>
@@ -188,16 +188,16 @@
     <item quantity="one">%s of %s Chapter Completed</item>
     <item quantity="other">%s of %s Chapters Completed</item>
   </plurals>
-  <plurals name="lesson_count">
+  <plurals name="lesson_count" fuzzy="true">
     <item quantity="one">1 Lesson</item>
     <item quantity="other">%s Lessons</item>
   </plurals>
-  <plurals name="completed_story_count">
+  <plurals name="completed_story_count" fuzzy="true">
     <item quantity="one">1 Story Completed</item>
     <item quantity="zero">%s Stories Completed</item>
     <item quantity="other">%s Stories Completed</item>
   </plurals>
-  <plurals name="ongoing_topic_count">
+  <plurals name="ongoing_topic_count" fuzzy="true">
     <item quantity="one">1 Topic in Progress</item>
     <item quantity="zero">%s Topics in Progress</item>
     <item quantity="other">%s Topics in Progress</item>
@@ -324,7 +324,7 @@
   <string name="profile_picture_edit_alert_dialog_choose_from_library">Choose From Library</string>
   <string name="profile_rename_activity_title">Rename Profile</string>
   <string name="profile_rename_label">New Name</string>
-  <string name="profile_rename_save">save</string>
+  <string name="profile_rename_save" fuzzy="true">save</string>
   <string name="profile_reset_pin_activity_title">Reset PIN</string>
   <string name="profile_reset_pin_main">Put new PIN for di user to put wan dey wan enter deir profile.</string>
   <string name="profile_reset_pin_user_pin_label">3-Digit PIN</string>
@@ -357,12 +357,12 @@
   <string name="app_last_update_date">Di last update install on %s. Use di version nomba for up to send feedback about bugs.</string>
   <string name="app_version_activity_title">App Version</string>
   <string name="app_language_activity_title">App Language</string>
-  <string name="audio_language_activity_title">Default Audio Language</string>
+  <string name="audio_language_activity_title" fuzzy="true">Default Audio Language</string>
   <string name="reading_text_size_activity_title">Reading Text Size</string>
   <string name="title_reading_text_size">Reading Text Size</string>
   <string name="story_text_will_look_like_this">Story text go look like dis.</string>
   <string name="constant_string_for_text_size">A</string>
-  <string name="audio_language">Default Audio</string>
+  <string name="audio_language" fuzzy="true">Default Audio</string>
   <string name="app_language">App Language</string>
   <string name="reading_text_size">Reading Text Size</string>
   <string name="reading_text_size_small">Small</string>
@@ -406,7 +406,6 @@
   <string name="reveal">Show</string>
   <string name="just_now">just now</string>
   <string name="last_logged_in_recently">recently</string>
-  <string name="time_ago">%s ago</string>
   <string name="yesterday">yesterday</string>
   <string name="return_to_topic">Go back to topic</string>
   <string name="return_to_lesson">Go back to lesson</string>
@@ -419,24 +418,12 @@
   <string name="up_button_disabled">Up</string>
   <string name="down_button_disabled">Down</string>
   <string name="profile_last_visited">%s %s</string>
-  <plurals name="minutes">
-    <item quantity="one">a minute</item>
-    <item quantity="other">%s minutes</item>
-  </plurals>
-  <plurals name="hours">
-    <item quantity="one">an hour</item>
-    <item quantity="other">%s hours</item>
-  </plurals>
-  <plurals name="days">
-    <item quantity="one">a day</item>
-    <item quantity="other">%s days</item>
-  </plurals>
   <string name="topic_revision_recyclerview_tag">topic_revision_recyclerview_tag</string>
   <string name="ongoing_recycler_view_tag">ongoing_recycler_view_tag</string>
   <string name="item_selection_text">Abeg select all di correct choices.</string>
-  <string name="unsupported_app_version_dialog_title">Unsupported app version</string>
-  <string name="unsupported_app_version_dialog_message">Dis version of di app no longer dey supported. Abeg update am from di Play Store.</string>
-  <string name="unsupported_app_version_dialog_close_button_text">Close app</string>
+  <string name="unsupported_app_version_dialog_title" fuzzy="true">Unsupported app version</string>
+  <string name="unsupported_app_version_dialog_message" fuzzy="true">Dis version of di app no longer dey supported. Abeg update am from di Play Store.</string>
+  <string name="unsupported_app_version_dialog_close_button_text" fuzzy="true">Close app</string>
   <string name="splash_screen_developer_label">Developer Build</string>
   <string name="splash_screen_alpha_label">Alpha</string>
   <string name="splash_screen_beta_label">Beta</string>
@@ -448,8 +435,8 @@
   <string name="general_availability_notice_dialog_message">Hello! Your app don dey update to di General Availability version. If you experience any problems while you dey use di app, or get any questions, abeg contact us at android-feedback@oppia.org.</string>
   <string name="general_availability_notice_dialog_do_not_show_again_text">No show dis message again</string>
   <string name="general_availability_notice_dialog_close_button_text">OK</string>
-  <string name="ratio_content_description_separator">to</string>
-  <string name="ratio_default_hint_text">Enter a ratio in di form x:y.</string>
+  <string name="ratio_content_description_separator" fuzzy="true">to</string>
+  <string name="ratio_default_hint_text" fuzzy="true">Enter a ratio in di form x:y.</string>
   <string name="text_input_default_hint_text">Tap here to put text.</string>
   <string name="smallest_text_size_content_description">Smallest text size</string>
   <string name="largest_text_size_content_description">Largest text size</string>
diff --git a/app/src/main/res/values-pt-rBR/strings.xml b/app/src/main/res/values-pt-rBR/strings.xml
index 9cb7c841127..03ef6e1b366 100644
--- a/app/src/main/res/values-pt-rBR/strings.xml
+++ b/app/src/main/res/values-pt-rBR/strings.xml
@@ -2,6 +2,7 @@
 <!-- Authors:
 * Carolintaschi
 * Eduardoaddad
+* Felipe L. Ewald
 * Jfalarini
 * Leosls
 * Re demz
@@ -19,19 +20,19 @@
   <string name="bottom_sheet_options_menu_close">Fechar</string>
   <string name="menu_switch_profile">Trocar Perfil</string>
   <string name="developer_options">Opções de Desenvolvedor</string>
-  <string name="administrator_controls">Controles de Administrador</string>
+  <string name="administrator_controls">Controles do administrador</string>
   <string name="drawer_open_content_description">Menu de Navegação Aberto</string>
   <string name="drawer_close_content_description">Fechar Menu de Navegação</string>
   <string name="audio_play_description">Tocar áudio</string>
   <string name="audio_pause_description">Pausar áudio</string>
-  <string name="audio_unavailable_in_selected_language">%s áudio está indisponível.</string>
-  <string name="audio_language_select_dialog_okay_button">OK</string>
+  <string name="audio_unavailable_in_selected_language">%s o áudio não está disponível.</string>
+  <string name="audio_language_select_dialog_okay_button" fuzzy="true">OK</string>
   <string name="audio_language_select_dialog_cancel_button">Cancelar</string>
   <string name="audio_language_select_dialog_title">Idioma de Áudio</string>
   <string name="audio_dialog_offline_title">Atualmente Offline</string>
   <string name="audio_dialog_offline_message">Certifique-se de que o Wi-Fi ou os dados móveis estejam ativados e tente novamente.</string>
-  <string name="audio_dialog_offline_positive">OK</string>
-  <string name="cellular_data_alert_dialog_okay_button">OK</string>
+  <string name="audio_dialog_offline_positive" fuzzy="true">OK</string>
+  <string name="cellular_data_alert_dialog_okay_button" fuzzy="true">OK</string>
   <string name="cellular_data_alert_dialog_cancel_button">Cancelar</string>
   <string name="cellular_data_alert_dialog_title">Atualmente em Dados Móveis</string>
   <string name="cellular_data_alert_dialog_description">O streaming de áudio pode usar muitos dados móveis.</string>
@@ -46,6 +47,9 @@
   <string name="stop_exploration_dialog_description">Seu progresso não será salvo.</string>
   <string name="stop_exploration_dialog_cancel_button">Cancelar</string>
   <string name="stop_exploration_dialog_leave_button">Sair</string>
+  <string name="exploration_exit_button_spotlight_hint">Saia a qualquer momento usando este botão. Nós salvaremos seu progresso.</string>
+  <string name="voiceover_icon_spotlight_hint">Gostaria que %s lesse para você? Toque neste botão para experimentar!</string>
+  <string name="voiceover_language_icon_spotlight_hint">Toque para alterar o idioma da narração.</string>
   <string name="progress_database_full_dialog_title">Capacidade máxima de armazenamento atingida</string>
   <string name="progress_database_full_dialog_description">O progresso salvo para a lição \"%s\" será excluído.</string>
   <string name="progress_database_full_dialog_continue_button">Continuar</string>
@@ -55,6 +59,13 @@
   <string name="topic_name_text_view">Razão e Proporção</string>
   <string name="topic_practice_skills_description">Selecione as habilidades que você gostaria de praticar.</string>
   <string name="topic_practice_start">Começar</string>
+  <string name="info_tab_content_description">Detalhes sobre o tópico.</string>
+  <string name="revision_tab_content_description">Revise os conceitos aprendidos nas lições concluídas aqui.</string>
+  <string name="practice_tab_content_description">Pratique os conceitos aprendidos nas lições concluídas.</string>
+  <string name="lessons_tab_content_description">Toque aqui para começar a tocar uma lição.</string>
+  <string name="topic_lessons_tab_spotlight_hint">Encontre todas as suas lições aqui.</string>
+  <string name="topic_revision_tab_spotlight_hint">Revise os conceitos aprendidos nas lições concluídas aqui.</string>
+  <string name="first_chapter_spotlight_hint">Toque aqui para começar a tocar uma lição.</string>
   <string name="state_continue_button">Continuar</string>
   <string name="state_continue_submit">Enviar</string>
   <string name="previous_state_description">Voltar ao cartão anterior</string>
@@ -78,7 +89,7 @@
   <string name="lessons">Lições</string>
   <string name="practice">Prática</string>
   <string name="revision">Revisão</string>
-  <string name="administrator_controls_title">Controles do Administrador</string>
+  <string name="administrator_controls_title">Controles do administrador</string>
   <string name="topic_page">Página do tópico</string>
   <string name="topic_name">Tópico: %s</string>
   <string name="topic">Tópico</string>
@@ -87,6 +98,8 @@
   <string name="chapter_completed">O capítulo %s com o título %s foi concluído</string>
   <string name="chapter_in_progress">O capítulo %s com o título %s está em andamento</string>
   <string name="chapter_prerequisite_title_label">Conclua o capítulo %s: %s para desbloquear este capítulo.</string>
+  <string name="chapter_locked_prerequisite_title_label">O capítulo %s: %s está bloqueado no momento. Conclua o capítulo %s: %s para desbloquear esse capítulo.</string>
+  <string name="chapter_prerequisite_title_label_without_chapter_title">Conclua o capítulo anterior para desbloquear este capítulo.</string>
   <string name="text_input_default_content_description">Inserir texto.</string>
   <string name="fractions_default_hint_text">Insira uma fração na forma x/x, ou um número misto na forma x x/x.</string>
   <string name="fractions_default_hint_text_no_integer">Insira uma fração no formato x/x.</string>
@@ -159,11 +172,11 @@
   <string name="number_error_starting_with_floating_point">Comece sua resposta com um número (por exemplo, \"0\" em 0,5)</string>
   <string name="number_error_invalid_format">Por favor, insira um número válido.</string>
   <string name="number_error_larger_than_fifteen_characters">A resposta pode conter no máximo 15 dígitos (0–9) ou símbolos (. ou -).</string>
-  <string name="ratio_error_invalid_chars">Escreva uma proporção que consista em dígitos separados por dois pontos (por exemplo, 1:2 ou 1:2:3).</string>
-  <string name="ratio_error_invalid_format">Insira uma proporção válida (por exemplo, 1:2 ou 1:2:3).</string>
-  <string name="ratio_error_invalid_colons">Sua resposta tem dois dois-pontos (:) do lado um do outro.</string>
-  <string name="ratio_error_invalid_size">O número de termos não é igual ao exigido.</string>
-  <string name="ratio_error_includes_zero">Proporções não podem ter 0 como elemento.</string>
+  <string name="ratio_error_invalid_chars" fuzzy="true">Escreva uma proporção que consista em dígitos separados por dois pontos (por exemplo, 1:2 ou 1:2:3).</string>
+  <string name="ratio_error_invalid_format" fuzzy="true">Insira uma proporção válida (por exemplo, 1:2 ou 1:2:3).</string>
+  <string name="ratio_error_invalid_colons" fuzzy="true">Sua resposta tem dois dois-pontos (:) do lado um do outro.</string>
+  <string name="ratio_error_invalid_size" fuzzy="true">O número de termos não é igual ao exigido.</string>
+  <string name="ratio_error_includes_zero" fuzzy="true">Proporções não podem ter 0 como elemento.</string>
   <string name="unknown_size">Tamanho desconhecido</string>
   <string name="size_bytes">%s Bytes</string>
   <string name="size_kb">%s KB</string>
@@ -171,11 +184,11 @@
   <string name="size_gb">%s GB</string>
   <string name="correct">Correto!</string>
   <string name="topic_prefix">Tópico: %s</string>
-  <plurals name="chapter_count">
+  <plurals name="chapter_count" fuzzy="true">
     <item quantity="one">1 Capítulo\n    </item>
     <item quantity="other">\n      %s Capítulos\n    </item>
   </plurals>
-  <plurals name="story_count">
+  <plurals name="story_count" fuzzy="true">
     <item quantity="one">1 História\n    </item>
     <item quantity="other">\n      %s Histórias\n    </item>
   </plurals>
@@ -183,24 +196,24 @@
     <item quantity="one">%s de %s Capítulo Concluído</item>
     <item quantity="other">%s de %s Capítulos Concluídos</item>
   </plurals>
-  <plurals name="lesson_count">
+  <plurals name="lesson_count" fuzzy="true">
     <item quantity="one">1 Lição\n    </item>
     <item quantity="other">\n      %s Lições\n    </item>
   </plurals>
-  <plurals name="completed_story_count">
-    <item quantity="one">1 História Concluída\n    </item>
-    <item quantity="zero">%s Histórias Concluídas\n    </item>
-    <item quantity="other">\n      %s Histórias Concluídas\n    </item>
+  <plurals name="completed_story_count" fuzzy="true">
+    <item quantity="one">1 história concluída</item>
+    <item quantity="zero">%s Histórias concluídas</item>
+    <item quantity="other">%s Histórias concluídas</item>
   </plurals>
-  <plurals name="ongoing_topic_count">
-    <item quantity="one">1 Tópico em Andamento\n    </item>
-    <item quantity="zero">%s Tópicos em Andamento\n    </item>
-    <item quantity="other">\n      %s Tópicos em Andamento\n    </item>
+  <plurals name="ongoing_topic_count" fuzzy="true">
+    <item quantity="one">1 Tópico em andamento</item>
+    <item quantity="zero">%s Tópicos em andamento</item>
+    <item quantity="other">%s Tópicos em andamento</item>
   </plurals>
   <string name="profile_chooser_activity_label">Página de seleção de perfil</string>
   <string name="profile_chooser_admin">Administrador</string>
   <string name="profile_chooser_select">Selecione seu perfil</string>
-  <string name="profile_chooser_add">Adicionar Perfil</string>
+  <string name="profile_chooser_add">Novo Perfil</string>
   <string name="set_up_multiple_profiles">Configurar Múltiplos Perfis</string>
   <string name="set_up_multiple_profiles_description">Adicione até 10 usuários à sua conta. Perfeito para famílias e salas de aula.</string>
   <string name="profile_chooser_administrator_controls">Controles do Administrador</string>
@@ -208,7 +221,7 @@
   <string name="admin_auth_toolbar">Controles do Administrador</string>
   <string name="admin_auth_activity_add_profiles_title">Autorize para adicionar perfis</string>
   <string name="admin_auth_activity_access_controls_title">Autorize para acessar os Controles do Administrador</string>
-  <string name="admin_auth_heading">Autorização do Administrador Necessária</string>
+  <string name="admin_auth_heading">Autorização do administrador necessária</string>
   <string name="admin_auth_sub">Insira o PIN do administrador para criar uma nova conta.</string>
   <string name="admin_auth_admin_controls_sub">Insira o PIN do administrador para acessar os Controles do Administrador.</string>
   <string name="admin_auth_pin">PIN do Administrador</string>
@@ -216,7 +229,7 @@
   <string name="admin_auth_null">Insira o PIN do administrador.</string>
   <string name="admin_auth_submit">Enviar</string>
   <string name="admin_auth_close">Fechar</string>
-  <string name="admin_pin_requirement_description" fuzzy="true">Antes de adicionarmos perfis, precisamos proteger sua conta criando um PIN. Isso dá a você a capacidade de autorizar downloads e gerenciar perfis no dispositivo.</string>
+  <string name="admin_pin_requirement_description">Antes de adicionarmos perfis, precisamos proteger sua conta criando um PIN. Isso lhe dá a capacidade de autorizar o gerenciamento de perfis no dispositivo.</string>
   <string name="admin_pin_pin_description">Use um PIN que você definiu para contas pessoais, como bancos ou previdência social.</string>
   <string name="admin_pin_new_pin">Novo PIN de 5 dígitos</string>
   <string name="admin_pin_new_confirm">Confirmar PIN de 5 dígitos</string>
@@ -224,11 +237,11 @@
   <string name="admin_pin_error_pin_confirm_wrong">Certifique-se de que os dois PINs coincidam.</string>
   <string name="save">Salvar</string>
   <string name="admin_pin_activity_title">Autorize para adicionar perfis</string>
-  <string name="add_profile_activity_label">Adicionar Perfil</string>
-  <string name="add_profile_title">Adicionar Perfil</string>
+  <string name="add_profile_activity_label">Novo Perfil</string>
+  <string name="add_profile_title">Novo Perfil</string>
   <string name="add_profile_input_name">Nome</string>
-  <string name="add_profile_input_pin" fuzzy="true">PIN de 3 Dígitos</string>
-  <string name="add_profile_input_confirm_pin" fuzzy="true">Confirmar PIN de 3 Dígitos</string>
+  <string name="add_profile_input_pin">PIN de 3 dígitos</string>
+  <string name="add_profile_input_confirm_pin">Confirmar PIN de 3 dígitos</string>
   <string name="add_profile_allow_download_heading">Permitir Acesso a Download</string>
   <string name="add_profile_allow_download_sub">O usuário pode baixar e excluir conteúdo sem o PIN do administrador.</string>
   <string name="add_profile_create_btn">Criar</string>
@@ -236,8 +249,8 @@
   <string name="add_profile_pin_info">Com um PIN, ninguém mais pode acessar um perfil além deste usuário atribuído.</string>
   <string name="add_profile_error_image_failed_store">Falha ao armazenar sua imagem de avatar. Por favor, tente novamente.</string>
   <string name="add_profile_error_name_not_unique">Este nome já está em uso por outro perfil.</string>
-  <string name="add_profile_error_name_empty" fuzzy="true">Por favor, insira um nome válido para este perfil.</string>
-  <string name="add_profile_error_name_only_letters" fuzzy="true">Por favor, escolha um nome de perfil que não inclua números ou símbolos.</string>
+  <string name="add_profile_error_name_empty">Digite um nome válido para esse perfil.</string>
+  <string name="add_profile_error_name_only_letters">Escolha um nome de perfil que não inclua números ou símbolos.</string>
   <string name="add_profile_error_pin_length">Seu PIN deve ter 3 dígitos.</string>
   <string name="add_profile_error_pin_confirm_wrong">Certifique-se de que os dois PINs coincidam.</string>
   <string name="add_profile_info_content_description">Mais informações sobre PINs de 3 dígitos.</string>
@@ -279,13 +292,14 @@
   <string name="enter_your_pin">Insira seu PIN</string>
   <string name="pin_password_toolbar_title">Insira o PIN</string>
   <string name="admin_settings_label">PIN do Administrador</string>
-  <string name="admin_settings_heading">Acesso às Configurações do Administrador</string>
+  <string name="admin_settings_heading">Acesso às configurações do administrador</string>
   <string name="admin_settings_sub">PIN do administrador necessário para alterar o PIN do usuário</string>
   <string name="admin_settings_cancel">Cancelar</string>
   <string name="admin_settings_submit">Enviar</string>
   <string name="admin_settings_incorrect">PIN do administrador incorreto. Por favor, tente novamente.</string>
   <string name="admin_settings_enter_user_new_pin">Novo PIN de %1$s</string>
   <string name="reset_pin_enter">Insira um Novo Pin</string>
+  <string name="reset_pin_enter_dialog_message">Esse PIN será o novo PIN de %s e será necessário ao fazer login.</string>
   <string name="my_downloads_activity_title">Meus Downloads</string>
   <string name="tab_downloads">Downloads</string>
   <string name="tab_updates">Atualizações (2)</string>
@@ -293,12 +307,17 @@
   <string name="home_activity_back_dialog_cancel">Cancelar</string>
   <string name="home_activity_back_dialog_exit">Sair</string>
   <string name="home_activity_title">Início</string>
+  <string name="promoted_story_spotlight_hint">A partir de agora, você pode ver as lições recomendadas para você aqui.</string>
   <string name="select_a_topic_to_start">Selecione um Tópico para começar</string>
   <string name="profile_list_activity_title">Perfis</string>
+  <string name="profile_edit_activity_title">Editar Perfil</string>
   <string name="profile_edit_created">Criado em %s</string>
   <string name="profile_last_used">Usado por último</string>
   <string name="profile_edit_rename">Renomear</string>
   <string name="profile_edit_reset">Redefinir PIN</string>
+  <string name="profile_edit_mark_chapter_completion">Marcar capítulos concluídos</string>
+  <string name="profile_edit_enable_quick_lesson_language_switching_label">Ativar a troca rápida de idioma</string>
+  <string name="profile_edit_enable_quick_lesson_language_switching_explanation">Permita que esse usuário alterne rapidamente entre inglês e suaíli em uma lição.</string>
   <string name="profile_edit_delete">Exclusão de Perfil</string>
   <string name="profile_edit_delete_dialog_title">Apagar este perfil permanentemente?</string>
   <string name="profile_edit_delete_dialog_message">Todo o progresso será apagado e não pode ser recuperado.</string>
@@ -313,7 +332,7 @@
   <string name="profile_picture_edit_alert_dialog_choose_from_library">Escolha da Biblioteca</string>
   <string name="profile_rename_activity_title">Renomear Perfil</string>
   <string name="profile_rename_label">Novo Nome</string>
-  <string name="profile_rename_save">salvar</string>
+  <string name="profile_rename_save" fuzzy="true">salvar</string>
   <string name="profile_reset_pin_activity_title">Redefinir PIN</string>
   <string name="profile_reset_pin_main">Insira um novo PIN para o usuário usar ao acessar seu perfil.</string>
   <string name="profile_reset_pin_user_pin_label">PIN de 3 Dígitos</string>
@@ -346,12 +365,12 @@
   <string name="app_last_update_date">A última atualização foi instalada em %s. Use o número da versão acima para enviar feedback sobre erros.</string>
   <string name="app_version_activity_title">Versão do Aplicativo</string>
   <string name="app_language_activity_title">Idioma do Aplicativo</string>
-  <string name="audio_language_activity_title">Idioma Padrão de Áudio</string>
+  <string name="audio_language_activity_title" fuzzy="true">Idioma Padrão de Áudio</string>
   <string name="reading_text_size_activity_title">Tamanho do Texto de Leitura</string>
   <string name="title_reading_text_size">Tamanho do Texto de Leitura</string>
   <string name="story_text_will_look_like_this">O texto da história ficará assim.</string>
   <string name="constant_string_for_text_size">A</string>
-  <string name="audio_language">Áudio Padrão</string>
+  <string name="audio_language" fuzzy="true">Áudio Padrão</string>
   <string name="app_language">Idioma do Aplicativo</string>
   <string name="reading_text_size">Tamanho do Texto de Leitura</string>
   <string name="reading_text_size_small">Pequeno</string>
@@ -380,17 +399,21 @@
   <string name="new_hint_available">Nova dica disponível</string>
   <string name="no_new_hint_available">Nova dica disponível</string>
   <string name="show_hints_and_solution">Mostrar dicas e solução</string>
-  <string name="hints_and_solution_close_icon_description" fuzzy="true">Navegar para cima</string>
+  <string name="hint_list_item_number">Dica %s</string>
+  <string name="hints_and_solution_close_icon_description">Fechar</string>
   <string name="hints_toolbar_title">Dicas</string>
-  <string name="show_solution" fuzzy="true">Exibir</string>
-  <string name="reveal_solution" fuzzy="true">Revelar Solução</string>
+  <string name="show_solution">Mostrar solução</string>
+  <string name="reveal_solution">Mostrar solução</string>
+  <string name="hint_list_solution_title">Solução</string>
   <string name="reveal_hint">Revelar Dica</string>
+  <string name="hide_hint">Ocultar dica</string>
+  <string name="hide_solution">Ocultar solução</string>
   <string name="hints_list_exclusive_solution_text">A única solução é: %s</string>
+  <string name="hints_list_possible_solution_text">Uma solução é: %s</string>
   <string name="this_will_reveal_the_solution">Isso revelará a solução. Tem certeza?</string>
-  <string name="reveal" fuzzy="true">Revelar</string>
+  <string name="reveal">Mostrar</string>
   <string name="just_now">Agora</string>
   <string name="last_logged_in_recently">recentemente</string>
-  <string name="time_ago">%s atrás</string>
   <string name="yesterday">ontem</string>
   <string name="return_to_topic">Voltar ao tópico</string>
   <string name="return_to_lesson">Voltar para a lição</string>
@@ -403,22 +426,10 @@
   <string name="up_button_disabled">Para cima</string>
   <string name="down_button_disabled">Para baixo</string>
   <string name="profile_last_visited">%s %s</string>
-  <plurals name="minutes">
-    <item quantity="one">um minuto</item>
-    <item quantity="other">%s minutos</item>
-  </plurals>
-  <plurals name="hours">
-    <item quantity="one">uma hora</item>
-    <item quantity="other">%s horas</item>
-  </plurals>
-  <plurals name="days">
-    <item quantity="one">um dia</item>
-    <item quantity="other">%s dias</item>
-  </plurals>
   <string name="topic_revision_recyclerview_tag">topic_revision_recyclerview_tag</string>
   <string name="ongoing_recycler_view_tag">ongoing_recycler_view_tag</string>
   <string name="item_selection_text">Por favor, selecione todas as alternativas corretas.</string>
-  <string name="unsupported_app_version_dialog_title">Versão do aplicativo não suportada</string>
+  <string name="unsupported_app_version_dialog_title" fuzzy="true">Versão do aplicativo não suportada</string>
   <string name="unsupported_app_version_dialog_message">Esta versão do aplicativo não é mais suportada. Atualize-a na Play Store.</string>
   <string name="unsupported_app_version_dialog_close_button_text">Fechar aplicativo</string>
   <string name="splash_screen_developer_label">Versão do desenvolvedor</string>
@@ -432,8 +443,8 @@
   <string name="general_availability_notice_dialog_message">Olá! Seu aplicativo está sendo atualizado para a versão de disponibilidade geral. Se você tiver problemas ao usar o aplicativo ou tiver dúvidas, entre em contato conosco em android-feedback@oppia.org.</string>
   <string name="general_availability_notice_dialog_do_not_show_again_text">Não exibir esta mensagem novamente</string>
   <string name="general_availability_notice_dialog_close_button_text">OK</string>
-  <string name="ratio_content_description_separator">para</string>
-  <string name="ratio_default_hint_text">Insira uma razão no formato x:y.</string>
+  <string name="ratio_content_description_separator" fuzzy="true"> para</string>
+  <string name="ratio_default_hint_text" fuzzy="true">Insira uma razão no formato x:y.</string>
   <string name="text_input_default_hint_text">Clique aqui para inserir texto.</string>
   <string name="smallest_text_size_content_description">Menor tamanho de texto</string>
   <string name="largest_text_size_content_description">Maior tamanho de texto</string>
@@ -481,13 +492,48 @@
   <string name="faq_answer_2">&lt;p&gt;Depois que um perfil é deletado:&lt;/p&gt; &lt;ol&gt;&lt;li&gt;O perfil não pode ser recuperado. &lt;/li&gt; &lt;li&gt; As informações do perfil, como nome, fotos e progresso, serão excluídas permanentemente. &lt;/li&gt;&lt;/ol&gt;&lt;p&gt;Para deletar um perfil(excluindo o do &lt;u&gt;Administrador&lt;/u&gt;):&lt;/p&gt; &lt;ol&gt;&lt;li&gt;Na página inicial do administrador, toque no botão de menu no canto superior esquerdo.&lt;/li&gt; &lt;li&gt;Toque em &lt;strong&gt;Controles do Administrador&lt;/strong&gt;.&lt;/li&gt; &lt;li&gt;3. Toque em &lt;strong&gt;Editar Perfis&lt;/strong&gt;.&lt;/li&gt; &lt;li&gt;4. Toque no perfil que deseja excluir.&lt;/li&gt; &lt;li&gt;5. Na parte inferior da tela, toque em &lt;strong&gt;Exclusão de Perfil&lt;/strong&gt;.&lt;/li&gt; &lt;li&gt;6. Toque em &lt;strong&gt;Deletar&lt;/strong&gt; para confirmar a exclusão.&lt;/li&gt;&lt;/ol&gt;&lt;p&gt;&lt;br&gt;&lt;/p&gt;&lt;p&gt;Nota: Apenas o &lt;u&gt;Administrador&lt;/u&gt; pode gerenciar perfis.&lt;/p&gt;</string>
   <string name="faq_answer_3">&lt;p&gt;Para alterar seu e-mail/número de telefone:&lt;/p&gt;&lt;ol&gt;&lt;li&gt;Na página inicial do administrador, toque no botão de menu no canto superior esquerdo.&lt;/li&gt;&lt;li&gt;Toque em &lt;strong&gt;Controles do Administrador&lt;/strong&gt;.&lt;/li&gt;&lt;li&gt;Toque em &lt;strong&gt;Editar Conta&lt;/strong&gt;.&lt;/li&gt;&lt;/ol&gt;&lt;p&gt;&lt;br&gt;&lt;/p&gt; &lt;p&gt;Se você deseja alterar seu e-mail:&lt;/p&gt;&lt;ol&gt;&lt;li&gt;Digite seu novo e-mail e toque em &lt;strong&gt;Salvar&lt;/strong&gt;.&lt;/li&gt;&lt;li&gt;Um link de confirmação será enviado para confirmar seu novo e-mail. O link irá expirar após 24 horas e deve ser clicado para ser associado à sua conta. &lt;/li&gt;&lt;/ol&gt;&lt;p&gt;&lt;br&gt;&lt;/p&gt; &lt;p&gt;Se mudar seu número de telefone:&lt;/p&gt;&lt;ol&gt;&lt;li&gt;Digite seu novo número de telefone e toque em &lt;strong&gt;Verificar&lt;/strong&gt;.&lt;/li&gt;&lt;li&gt;Um código será enviado para confirmar seu novo número. O código expira após 5 minutos e deve ser inserido na nova tela para ser associado à sua conta.&lt;/li&gt;&lt;/ol&gt;</string>
   <string name="faq_answer_4">&lt;p&gt;%1$s &lt;i&gt;\"O-pee-yah\"&lt;/i&gt; (Finnish) - \"aprender\"&lt;/p&gt;&lt;p&gt;&lt;br&gt;&lt;/p&gt;&lt;p&gt;%1$s tem a missão de ajudar qualquer pessoa a aprender o que quiser de uma forma eficaz e agradável.&lt;/p&gt;&lt;p&gt;&lt;br&gt;&lt;/p&gt;&lt;p&gt;Ao criar um conjunto de aulas gratuitas, de alta qualidade e comprovadamente eficazes com a ajuda de educadores de todo o mundo, %1$s visa proporcionar aos alunos uma educação de qualidade - independentemente de onde estejam ou a quais recursos tradicionais tenham acesso.&lt;/p&gt;&lt;p&gt;&lt;br&gt;&lt;/p&gt;&lt;p&gt;Como estudante, você pode começar sua aventura de aprendizado navegando pelos tópicos listados na página inicial!&lt;/p&gt;</string>
-  <string name="faq_answer_5" fuzzy="true">&lt;p&gt;Um administrador é o usuário principal que gerencia perfis e configurações para cada perfil em sua conta. Provavelmente, eles são seus pais, professores ou responsáveis ​​que criaram este perfil para você.&lt;/p&gt;&lt;p&gt;&lt;br&gt;&lt;/p&gt;&lt;p&gt;Os administradores podem gerenciar perfis, atribuir PINs e alterar outras configurações em suas contas. Dependendo do seu perfil, as permissões de administrador podem ser necessárias para determinados recursos, como download de tópicos, alteração do PIN e muito mais. &lt;/p&gt;&lt;p&gt;&lt;br&gt;&lt;/p&gt;&lt;p&gt;Para ver quem é o seu administrador, vá para o Seletor de perfil. O primeiro perfil listado e com \"Administrador\" escrito em seu nome é o Administrador. &lt;/p&gt;</string>
+  <string name="faq_answer_5">&lt;p&gt;Um administrador é o usuário principal que gerencia perfis e configurações para cada perfil em sua conta. Provavelmente, eles são seus pais, professores ou responsáveis ​​que criaram este perfil para você.&lt;/p&gt;&lt;p&gt;&lt;br&gt;&lt;/p&gt;&lt;p&gt;Os administradores podem gerenciar perfis, atribuir PINs e alterar outras configurações em suas contas. Dependendo do seu perfil, as permissões de administrador podem ser necessárias para determinados recursos, como download de tópicos, alteração do PIN e mais. &lt;/p&gt;&lt;p&gt;&lt;br&gt;&lt;/p&gt;&lt;p&gt;Para ver quem é o seu administrador, vá para o Seletor de perfil. O primeiro perfil listado e com \"Administrador\" escrito em seu nome é o Administrador. &lt;/p&gt;</string>
   <string name="faq_answer_6">&lt;p&gt;Se a exploração não estiver carregando&lt;/p&gt;&lt;p&gt;&lt;br&gt;&lt;/p&gt;&lt;p&gt;Verifique se o aplicativo está atualizado:&lt;/p&gt;&lt;p&gt; &lt;ul&gt; &lt;li&gt; Acesse a Play Store e certifique-se de que o aplicativo esteja atualizado com a versão mais recente &lt;/li&gt;&lt;/ul&gt;&lt;p&gt;&lt;br&gt;&lt;/p&gt;&lt;p&gt;Verifique sua conexão com a internet:&lt;/p&gt;&lt;ul&gt;&lt;li&gt; Se sua conexão com a Internet estiver lenta, tente se reconectar à rede Wi-Fi ou conectar-se a uma rede diferente. &lt;/li&gt;&lt;/ul&gt;&lt;p&gt;Peça ao administrador para verificar o dispositivo e a conexão com a Internet:&lt;/p&gt;&lt;ul&gt;&lt;li&gt; Peça ao administrador para solucionar o problema usando as etapas acima &lt;/li&gt;&lt;/ul&gt;&lt;p&gt;Informe-nos se você ainda tiver problemas com o carregamento::&lt;/p&gt;&lt;ul&gt;&lt;li&gt; Relate um problema entrando em contato conosco em admin@oppia.org. &lt;/li&gt; &lt;/ul&gt;</string>
   <string name="faq_answer_7">&lt;p&gt;Se o seu áudio não estiver tocando&lt;/p&gt;&lt;p&gt;&lt;br&gt;&lt;/p&gt;&lt;p&gt;Verifique se o aplicativo está atualizado:&lt;/p&gt;&lt;ul&gt;&lt;li&gt; Acesse a Play Store e certifique-se de que o aplicativo esteja atualizado com a versão mais recente &lt;/li&gt;&lt;/ul&gt;&lt;p&gt;&lt;br&gt;&lt;/p&gt;&lt;p&gt;Verifique sua conexão com a internet:&lt;/p&gt;&lt;ul&gt;&lt;li&gt; Se sua conexão com a Internet estiver lenta, tente se reconectar à rede Wi-Fi ou conectar-se a uma rede diferente. A Internet lenta pode fazer com que o áudio carregue irregularmente, dificultando a reprodução. &lt;/li&gt;&lt;/ul&gt;&lt;p&gt;&lt;br&gt;&lt;/p&gt;&lt;p&gt;Peça ao administrador para verificar o dispositivo e a conexão com a Internet:&lt;/p&gt;&lt;ul&gt;&lt;li&gt; Peça ao administrador para solucionar o problema usando as etapas acima&lt;/li&gt;&lt;/ul&gt;&lt;p&gt;&lt;br&gt;&lt;/p&gt;&lt;p&gt;Informe-nos se você ainda tiver problemas com o carregamento:&lt;/p&gt;&lt;ul&gt;&lt;li&gt; Relate um problema entrando em contato conosco em admin@oppia.org. &lt;/li&gt;&lt;/ul&gt;</string>
   <string name="faq_answer_9">&lt;p&gt;Se você não consegue encontrar sua pergunta ou gostaria de relatar um problema, entre em contato conosco em admin@oppia.org.&lt;/p&gt;</string>
   <string name="profile_edit_fragment_test_activity_label">Atividade de Teste de Fragmento de Edição de Perfil</string>
   <string name="administrator_controls_fragment_test_activity_label">Controle Administrativo da Atividade de Teste de Fragmento</string>
+  <string name="revision_navigation_cards_header">Continuar estudando</string>
+  <string name="state_fragment_hint_bar_forced_announcement_text">Vá até a parte inferior da tela para obter uma dica.</string>
   <string name="state_fragment_item_selection_no_items_selected_hint_text">Por favor, selecione todas as alternativas corretas.</string>
   <string name="state_fragment_item_selection_some_items_selected_hint_text">Pode selecionar outras opções.</string>
   <string name="state_fragment_item_selection_max_items_selected_hint_text">Mais do que %s opções podem ser selecionadas.</string>
+  <string name="survey_activity_title">Pesquisa</string>
+  <string name="survey_previous_button">Anterior</string>
+  <string name="survey_submit_button">Enviar</string>
+  <string name="survey_free_form_text_hint">Deixe seu feedback aqui</string>
+  <string name="survey_continue_survey_button">Continuar a pesquisa</string>
+  <string name="survey_exit_button">Sair</string>
+  <string name="survey_exit_button_description">Pesquisa de saída</string>
+  <string name="survey_exit_confirmation_text">Tem certeza de que deseja sair da pesquisa?</string>
+  <string name="survey_onboarding_message_text">Seu feedback nos ajuda a atender melhor alunos como você. Gostaria de responder a uma breve pesquisa sobre sua experiência?</string>
+  <string name="survey_begin_survey_button">Iniciar pesquisa</string>
+  <string name="survey_maybe_later_button">Talvez mais tarde</string>
+  <string name="survey_thank_you_message_text">Obrigado por responder à pesquisa. Esperamos que você tenha gostado de usar o %s!</string>
+  <string name="survey_exit_survey_button">Pesquisa de saída</string>
+  <string name="survey_onboarding_title_text">Gostaríamos muito de receber seu feedback!</string>
+  <string name="survey_thank_you_title_text">Obrigado</string>
+  <string name="survey_nps_not_at_all_likely_label">0 - Pouco provável</string>
+  <string name="survey_nps_extremely_likely_label">10 - Extremamente provável</string>
+  <string name="user_type_question">Selecione uma das opções a seguir:</string>
+  <string name="user_type_answer_learner">Eu sou um formando</string>
+  <string name="user_type_answer_teacher">Eu sou um professor</string>
+  <string name="user_type_answer_parent">Eu sou um pai</string>
+  <string name="user_type_answer_other">Outro</string>
+  <string name="market_fit_question">Como você se sentiria se não pudesse mais usar %s?</string>
+  <string name="market_fit_answer_very_disappointed">Muito decepcionado</string>
+  <string name="market_fit_answer_somewhat_disappointed">Um pouco decepcionado</string>
+  <string name="market_fit_answer_not_disappointed">Não fiquei desapontado</string>
+  <string name="market_fit_answer_wont_use_oppia">N/A - Não uso mais %s</string>
+  <string name="nps_promoter_feedback_question">Ficamos felizes que tenha gostado de sua experiência com a %s. Compartilhe o que mais o ajudou:</string>
+  <string name="nps_passive_feedback_question">Obrigado por responder! Como podemos proporcionar uma experiência melhor?</string>
+  <string name="nps_detractor_feedback_question">Ajude-nos a melhorar sua experiência! Compartilhe o principal motivo da sua pontuação:</string>
+  <string name="nps_score_question">Em uma escala de 0 a 10, qual é a probabilidade de você recomendar %s a um amigo ou colega?</string>
+  <string name="previous_subtopic_talkback_text">O subtópico anterior é %s</string>
+  <string name="next_subtopic_talkback_text">O próximo subtópico é %s</string>
 </resources>
diff --git a/app/src/main/res/values-sw/strings.xml b/app/src/main/res/values-sw/strings.xml
index 1cf7fc4433c..758c513d8e0 100644
--- a/app/src/main/res/values-sw/strings.xml
+++ b/app/src/main/res/values-sw/strings.xml
@@ -18,13 +18,13 @@
   <string name="drawer_close_content_description">Orodha ya Uelekezaji Funga</string>
   <string name="audio_play_description">Cheza Sauti</string>
   <string name="audio_pause_description">Sitisha sauti</string>
-  <string name="audio_language_select_dialog_okay_button">sawa</string>
+  <string name="audio_language_select_dialog_okay_button" fuzzy="true">sawa</string>
   <string name="audio_language_select_dialog_cancel_button">futa</string>
   <string name="audio_language_select_dialog_title">Lugha ya Sauti</string>
   <string name="audio_dialog_offline_title">Nje ya Mtandao kwa sasa</string>
   <string name="audio_dialog_offline_message">Hakikisha kuwa Wi-Fi au data ya mtandao wa simu imewashwa, kisha ujaribu tena.</string>
-  <string name="audio_dialog_offline_positive">sawa</string>
-  <string name="cellular_data_alert_dialog_okay_button">sawa</string>
+  <string name="audio_dialog_offline_positive" fuzzy="true">sawa</string>
+  <string name="cellular_data_alert_dialog_okay_button" fuzzy="true">sawa</string>
   <string name="cellular_data_alert_dialog_cancel_button">futa</string>
   <string name="cellular_data_alert_dialog_title">Kwa sasa ipo kwenye Data ya Simu</string>
   <string name="cellular_data_alert_dialog_description">Kutiririsha sauti kunaweza kutumia data nyingi ya mtandao wa simu.</string>
@@ -152,11 +152,11 @@
   <string name="number_error_starting_with_floating_point">Tafadhali anza jibu lako kwa nambari (k.m.,”0” katika 0.5).</string>
   <string name="number_error_invalid_format">Tafadhali weka nambari halali.</string>
   <string name="number_error_larger_than_fifteen_characters">Jibu linaweza kuwa na tarakimu zisizozidi 15 (0–9) au alama (. au -).</string>
-  <string name="ratio_error_invalid_chars">Tafadhali andika uwiano unaojumuisha tarakimu zilizotenganishwa na koloni(k.m. 1:2 au 1:2:3).</string>
-  <string name="ratio_error_invalid_format">Tafadhali weka uwiano sahihi (k.m. 1:2 au 1:2:3).</string>
-  <string name="ratio_error_invalid_colons">Jibu lako lina koloni mbili (:) karibu na kila moja.</string>
-  <string name="ratio_error_invalid_size">Idadi ya masharti si sawa na masharti yanayohitajika.</string>
-  <string name="ratio_error_includes_zero">Uwiano hauwezi kuwa na 0 kama kipengele.</string>
+  <string name="ratio_error_invalid_chars" fuzzy="true">Tafadhali andika uwiano unaojumuisha tarakimu zilizotenganishwa na koloni(k.m. 1:2 au 1:2:3).</string>
+  <string name="ratio_error_invalid_format" fuzzy="true">Tafadhali weka uwiano sahihi (k.m. 1:2 au 1:2:3).</string>
+  <string name="ratio_error_invalid_colons" fuzzy="true">Jibu lako lina koloni mbili (:) karibu na kila moja.</string>
+  <string name="ratio_error_invalid_size" fuzzy="true">Idadi ya masharti si sawa na masharti yanayohitajika.</string>
+  <string name="ratio_error_includes_zero" fuzzy="true">Uwiano hauwezi kuwa na 0 kama kipengele.</string>
   <string name="unknown_size">Ukubwa usiojulikana</string>
   <string name="size_bytes">Baiti %s</string>
   <string name="size_kb">%s KB</string>
@@ -164,11 +164,11 @@
   <string name="size_gb">%s GB</string>
   <string name="correct">Sahihi!</string>
   <string name="topic_prefix">Mada: %s</string>
-  <plurals name="chapter_count">
+  <plurals name="chapter_count" fuzzy="true">
     <item quantity="one">Sura 1</item>
     <item quantity="other">Sura %s</item>
   </plurals>
-  <plurals name="story_count">
+  <plurals name="story_count" fuzzy="true">
     <item quantity="one">Hadithi 1</item>
     <item quantity="other">Hadithi %s</item>
   </plurals>
@@ -176,7 +176,7 @@
     <item quantity="one">%s kati ya Sura %s Imekamilika</item>
     <item quantity="other">%s ya Sura %s Imekamilika</item>
   </plurals>
-  <plurals name="lesson_count">
+  <plurals name="lesson_count" fuzzy="true">
     <item quantity="one">Somo 1</item>
     <item quantity="other">Masomo %s</item>
   </plurals>
@@ -290,7 +290,7 @@
   <string name="profile_picture_edit_alert_dialog_choose_from_library">Chagua Kutoka kwa Maktaba</string>
   <string name="profile_rename_activity_title">Badilisha Jina la Wasifu</string>
   <string name="profile_rename_label">Jina Jipya</string>
-  <string name="profile_rename_save">Hifadhi</string>
+  <string name="profile_rename_save" fuzzy="true">Hifadhi</string>
   <string name="profile_reset_pin_activity_title">Weka upya Nambari ya Siri</string>
   <string name="profile_reset_pin_main">Weka Nambari mpya ya Siri ili mtumiaji aiweke anapofikia wasifu wake.</string>
   <string name="profile_reset_pin_user_pin_label">Nambari ya Siri ya tarakimu 3*</string>
@@ -323,12 +323,12 @@
   <string name="app_last_update_date">Sasisho la mwisho lilisakinishwa kwenye %s. Tumia nambari ya toleo iliyo hapo juu kutuma maoni kuhusu hitilafu.</string>
   <string name="app_version_activity_title">Toleo la Programu</string>
   <string name="app_language_activity_title">Lugha ya Programu</string>
-  <string name="audio_language_activity_title">Lugha chaguomsingi ya Sauti</string>
+  <string name="audio_language_activity_title" fuzzy="true">Lugha chaguomsingi ya Sauti</string>
   <string name="reading_text_size_activity_title">Ukubwa wa Maandishi ya Kusoma</string>
   <string name="title_reading_text_size">Ukubwa wa Maandishi ya Kusoma</string>
   <string name="story_text_will_look_like_this">Nakala ya hadithi itaonekana hivi.</string>
   <string name="constant_string_for_text_size">A</string>
-  <string name="audio_language">Sauti Chaguomsingi</string>
+  <string name="audio_language" fuzzy="true">Sauti Chaguomsingi</string>
   <string name="app_language">Lugha ya Programu</string>
   <string name="reading_text_size">Ukubwa wa Maandishi ya Kusoma</string>
   <string name="reading_text_size_small">Ndogo</string>
@@ -364,7 +364,6 @@
   <string name="reveal" fuzzy="true">Fichua</string>
   <string name="just_now">sasa hivi</string>
   <string name="last_logged_in_recently">hivi karibuni</string>
-  <string name="time_ago">%s iliyopita</string>
   <string name="yesterday">jana</string>
   <string name="return_to_topic">Rudi kwenye mada</string>
   <string name="explanation">Ufafanuzi:</string>
@@ -376,26 +375,14 @@
   <string name="up_button_disabled">Juu</string>
   <string name="down_button_disabled">Chini</string>
   <string name="profile_last_visited">%s %s</string>
-  <plurals name="minutes">
-    <item quantity="one">dakika</item>
-    <item quantity="other">dakika %s</item>
-  </plurals>
-  <plurals name="hours">
-    <item quantity="one">saa</item>
-    <item quantity="other">saa %s</item>
-  </plurals>
-  <plurals name="days">
-    <item quantity="one">siku</item>
-    <item quantity="other">siku %s</item>
-  </plurals>
   <string name="topic_revision_recyclerview_tag">mada_marudio_mtazamo wa kuchakata tena_tag</string>
   <string name="ongoing_recycler_view_tag">Inaendelea_kuchakata tena_mtazamo_tag</string>
   <string name="item_selection_text" fuzzy="true">Tafadhali chagua angalau chaguo moja.</string>
-  <string name="unsupported_app_version_dialog_title">Toleo la programu lisilotumika</string>
-  <string name="unsupported_app_version_dialog_message">Toleo hili la programu halitumiki tena. Tafadhali isasishe kupitia hifadhi ya michezo.</string>
-  <string name="unsupported_app_version_dialog_close_button_text">Funga programu</string>
-  <string name="ratio_content_description_separator">kwa</string>
-  <string name="ratio_default_hint_text">Weka uwiano katika fomu x:y.</string>
+  <string name="unsupported_app_version_dialog_title" fuzzy="true">Toleo la programu lisilotumika</string>
+  <string name="unsupported_app_version_dialog_message" fuzzy="true">Toleo hili la programu halitumiki tena. Tafadhali isasishe kupitia hifadhi ya michezo.</string>
+  <string name="unsupported_app_version_dialog_close_button_text" fuzzy="true">Funga programu</string>
+  <string name="ratio_content_description_separator" fuzzy="true">kwa</string>
+  <string name="ratio_default_hint_text" fuzzy="true">Weka uwiano katika fomu x:y.</string>
   <string name="smallest_text_size_content_description">Maandishi madogo zaidi</string>
   <string name="largest_text_size_content_description">Maandishi kubwa zaidi</string>
   <string name="coming_soon">Inakuja Hivi Karibuni</string>