diff --git a/po/ar.po b/po/ar.po
index dba6a145..45709e9d 100644
--- a/po/ar.po
+++ b/po/ar.po
@@ -473,11 +473,11 @@ msgstr "`Box<T>`"
 
 #: src/SUMMARY.md src/smart-pointers/rc.md
 msgid "`Rc`"
-msgstr ""
+msgstr "`Rc`"
 
 #: src/SUMMARY.md src/smart-pointers/trait-objects.md
 msgid "Owned Trait Objects"
-msgstr ""
+msgstr "`(Owned Trait Objects)` كائنات السمات المملوكة"
 
 #: src/SUMMARY.md src/smart-pointers/exercise.md
 #, fuzzy
@@ -491,47 +491,47 @@ msgstr "اليوم الأول: صباحا"
 
 #: src/SUMMARY.md src/borrowing.md
 msgid "Borrowing"
-msgstr ""
+msgstr "الاستعارة (Borrowing)"
 
 #: src/SUMMARY.md src/borrowing/shared.md
 msgid "Borrowing a Value"
-msgstr ""
+msgstr "استعارة قيمة"
 
 #: src/SUMMARY.md src/borrowing/borrowck.md
 msgid "Borrow Checking"
-msgstr ""
+msgstr "فحص الاستعارة (Borrow Checking)"
 
 #: src/SUMMARY.md src/borrowing/examples.md
 msgid "Borrow Errors"
-msgstr ""
+msgstr "أخطاء الاستعارة (Borrow Errors)"
 
 #: src/SUMMARY.md src/borrowing/interior-mutability.md
 msgid "Interior Mutability"
-msgstr ""
+msgstr "القابلية للتغيير الداخلي (Interior Mutability)"
 
 #: src/SUMMARY.md src/borrowing/exercise.md
 msgid "Exercise: Health Statistics"
-msgstr ""
+msgstr "(Health Statistics) تمرين: إحصاءات الصحة"
 
 #: src/SUMMARY.md src/lifetimes.md
 msgid "Lifetimes"
-msgstr ""
+msgstr "فترات الحياة (Lifetimes)"
 
 #: src/SUMMARY.md src/lifetimes/lifetime-annotations.md
 msgid "Lifetime Annotations"
-msgstr ""
+msgstr "تعليمات فترة الحياة (Lifetime Annotations)"
 
 #: src/SUMMARY.md
 msgid "Lifetime Elision"
-msgstr ""
+msgstr "حذف فترة الحياة (Lifetime Elision)"
 
 #: src/SUMMARY.md
 msgid "Struct Lifetimes"
-msgstr ""
+msgstr "فترات حياة الهياكل (Struct Lifetimes)"
 
 #: src/SUMMARY.md src/lifetimes/exercise.md
 msgid "Exercise: Protobuf Parsing"
-msgstr ""
+msgstr "تمرين: تحليل Protobuf (Protobuf Parsing)"
 
 #: src/SUMMARY.md
 #, fuzzy
@@ -540,63 +540,64 @@ msgstr "اليوم الأول: صباحا"
 
 #: src/SUMMARY.md src/iterators.md
 msgid "Iterators"
-msgstr ""
+msgstr "المكررات (Iterators)"
 
 #: src/SUMMARY.md src/iterators/iterator.md src/bare-metal/no_std.md
 msgid "`Iterator`"
-msgstr ""
+msgstr "`Iterator` (المكرر)"
 
 #: src/SUMMARY.md src/iterators/intoiterator.md
 msgid "`IntoIterator`"
-msgstr ""
+msgstr "`IntoIterator` (إلى مكرر)"
 
 #: src/SUMMARY.md
 msgid "`FromIterator`"
-msgstr ""
+msgstr "`FromIterator` (من مكرر)"
 
 #: src/SUMMARY.md src/iterators/exercise.md
 msgid "Exercise: Iterator Method Chaining"
-msgstr ""
+msgstr "تمرين: تسلسل طرق المكرر (Iterator Method Chaining)"
 
 #: src/SUMMARY.md src/modules.md src/modules/modules.md
 msgid "Modules"
-msgstr ""
+msgstr "الوحدات (Modules)"
 
 #: src/SUMMARY.md src/modules/filesystem.md
 msgid "Filesystem Hierarchy"
-msgstr ""
+msgstr "التسلسل الهرمي لنظام الملفات (Filesystem Hierarchy)"
 
 #: src/SUMMARY.md src/modules/visibility.md
 msgid "Visibility"
-msgstr ""
+msgstr "الرؤية (Visibility)"
 
 #: src/SUMMARY.md
 msgid "`use`, `super`, `self`"
-msgstr ""
+msgstr "`use`, `super`, `self` استخدام"
 
 #: src/SUMMARY.md src/modules/exercise.md
 msgid "Exercise: Modules for a GUI Library"
 msgstr ""
+"تمرين: الوحدات لمكتبة واجهة المستخدم الرسومية (Modules for a GUI Library)"
 
 #: src/SUMMARY.md src/testing.md src/chromium/testing.md
 msgid "Testing"
-msgstr ""
+msgstr "الاختبار (Testing)"
 
 #: src/SUMMARY.md
 msgid "Test Modules"
-msgstr ""
+msgstr "وحدات الاختبار (Test Modules)"
 
 #: src/SUMMARY.md src/testing/other.md
 msgid "Other Types of Tests"
-msgstr ""
+msgstr "أنواع أخرى من الاختبارات (Other Types of Tests)"
 
 #: src/SUMMARY.md src/testing/lints.md
 msgid "Compiler Lints and Clippy"
-msgstr ""
+msgstr "التحذيرات البرمجية  (Compiler Lints) و Clippy"
 
 #: src/SUMMARY.md src/testing/exercise.md
 msgid "Exercise: Luhn Algorithm"
-msgstr ""
+msgstr "تمرين: خوارزمية لون (Luhn Algorithm)"
 
 #: src/SUMMARY.md
 #, fuzzy
@@ -605,59 +606,59 @@ msgstr "اليوم الأول: صباحا"
 
 #: src/SUMMARY.md src/error-handling.md
 msgid "Error Handling"
-msgstr ""
+msgstr "معالجة الأخطاء (Error Handling)"
 
 #: src/SUMMARY.md src/error-handling/panics.md
 msgid "Panics"
-msgstr ""
+msgstr "Panics"
 
 #: src/SUMMARY.md src/error-handling/try.md
 msgid "Try Operator"
-msgstr ""
+msgstr "مشغل المحاولة (Try Operator)"
 
 #: src/SUMMARY.md src/error-handling/try-conversions.md
 msgid "Try Conversions"
-msgstr ""
+msgstr "محاولات التحويل (Try Conversions)"
 
 #: src/SUMMARY.md
 msgid "`Error` Trait"
-msgstr ""
+msgstr "سمة `Error` (Error Trait)"
 
 #: src/SUMMARY.md src/error-handling/thiserror-and-anyhow.md
 msgid "`thiserror` and `anyhow`"
-msgstr ""
+msgstr "`thiserror` و `anyhow`"
 
 #: src/SUMMARY.md
 msgid "Exercise: Rewriting with `Result`"
-msgstr ""
+msgstr "تمرين: إعادة الكتابة باستخدام `Result`"
 
 #: src/SUMMARY.md src/unsafe-rust.md src/unsafe-rust/unsafe.md
 msgid "Unsafe Rust"
-msgstr ""
+msgstr "Rust غير الآمنة (Unsafe Rust)"
 
 #: src/SUMMARY.md
 msgid "Unsafe"
-msgstr ""
+msgstr "غير آمن (Unsafe)"
 
 #: src/SUMMARY.md src/unsafe-rust/dereferencing.md
 msgid "Dereferencing Raw Pointers"
-msgstr ""
+msgstr "إلغاء مرجعية المؤشرات الخام (Dereferencing Raw Pointers)"
 
 #: src/SUMMARY.md src/unsafe-rust/mutable-static.md
 msgid "Mutable Static Variables"
-msgstr ""
+msgstr "المتغيرات الثابتة القابلة للتغيير (Mutable Static Variables)"
 
 #: src/SUMMARY.md src/unsafe-rust/unions.md
 msgid "Unions"
-msgstr ""
+msgstr "الاتحادات (Unions)"
 
 #: src/SUMMARY.md src/unsafe-rust/unsafe-functions.md
 msgid "Unsafe Functions"
-msgstr ""
+msgstr "الدوال غير الآمنة (Unsafe Functions)"
 
 #: src/SUMMARY.md
 msgid "Unsafe Traits"
-msgstr ""
+msgstr "السمات غير الآمنة (Unsafe Traits)"
 
 #: src/SUMMARY.md
 #, fuzzy
@@ -666,79 +667,79 @@ msgstr "تمرين: فيبوناتشي"
 
 #: src/SUMMARY.md src/bare-metal/android.md
 msgid "Android"
-msgstr ""
+msgstr "أندرويد (Android)"
 
 #: src/SUMMARY.md src/android/setup.md src/chromium/setup.md
 msgid "Setup"
-msgstr ""
+msgstr "الإعداد (Setup)"
 
 #: src/SUMMARY.md src/android/build-rules.md
 msgid "Build Rules"
-msgstr ""
+msgstr "قواعد البناء (Build Rules)"
 
 #: src/SUMMARY.md
 msgid "Binary"
-msgstr ""
+msgstr "ثنائي (Binary)"
 
 #: src/SUMMARY.md
 msgid "Library"
-msgstr ""
+msgstr "مكتبة (Library)"
 
 #: src/SUMMARY.md src/android/aidl.md
 msgid "AIDL"
-msgstr ""
+msgstr "AIDL"
 
 #: src/SUMMARY.md src/android/aidl/birthday-service.md
 msgid "Birthday Service Tutorial"
-msgstr ""
+msgstr "دليل خدمة عيد الميلاد (Birthday Service Tutorial)"
 
 #: src/SUMMARY.md
 msgid "Interface"
-msgstr ""
+msgstr "الواجهة (Interface)"
 
 #: src/SUMMARY.md
 msgid "Service API"
-msgstr ""
+msgstr "واجهة برمجة التطبيقات للخدمة (Service API)"
 
 #: src/SUMMARY.md
 msgid "Service"
-msgstr ""
+msgstr "الخدمة (Service)"
 
 #: src/SUMMARY.md
 msgid "Server"
-msgstr ""
+msgstr "الخادم (Server)"
 
 #: src/SUMMARY.md src/android/aidl/example-service/deploy.md
 msgid "Deploy"
-msgstr ""
+msgstr "النشر (Deploy)"
 
 #: src/SUMMARY.md
 msgid "Client"
-msgstr ""
+msgstr "العميل (Client)"
 
 #: src/SUMMARY.md src/android/aidl/example-service/changing-definition.md
 msgid "Changing API"
-msgstr ""
+msgstr "تغيير واجهة برمجة التطبيقات (Changing API)"
 
 #: src/SUMMARY.md
 msgid "Updating Implementations"
-msgstr ""
+msgstr "تحديث التنفيذات (Updating Implementations)"
 
 #: src/SUMMARY.md
 msgid "AIDL Types"
-msgstr ""
+msgstr "أنواع AIDL (AIDL Types)"
 
 #: src/SUMMARY.md src/android/aidl/types/primitives.md
 msgid "Primitive Types"
-msgstr ""
+msgstr "الأنواع الأولية (Primitive Types)"
 
 #: src/SUMMARY.md src/android/aidl/types/arrays.md
 msgid "Array Types"
-msgstr ""
+msgstr "أنواع المصفوفات (Array Types)"
 
 #: src/SUMMARY.md src/android/aidl/types/objects.md
 msgid "Sending Objects"
-msgstr ""
+msgstr "إرسال الكائنات (Sending Objects)"
 
 #: src/SUMMARY.md src/android/aidl/types/parcelables.md
 #, fuzzy
@@ -747,145 +748,148 @@ msgstr "المتغيرات"
 
 #: src/SUMMARY.md src/android/aidl/types/file-descriptor.md
 msgid "Sending Files"
-msgstr ""
+msgstr "إرسال الملفات (Sending Files)"
 
 #: src/SUMMARY.md src/android/testing/googletest.md
 msgid "GoogleTest"
-msgstr ""
+msgstr "GoogleTest"
 
 #: src/SUMMARY.md src/android/testing/mocking.md
 msgid "Mocking"
-msgstr ""
+msgstr "المحاكاة (Mocking)"
 
 #: src/SUMMARY.md src/android/logging.md src/bare-metal/aps/logging.md
 msgid "Logging"
-msgstr ""
+msgstr "التسجيل (Logging)"
 
 #: src/SUMMARY.md src/android/interoperability.md
 msgid "Interoperability"
-msgstr ""
+msgstr "قابلية التشغيل البيني (Interoperability)"
 
 #: src/SUMMARY.md
 msgid "With C"
-msgstr ""
+msgstr "مع C (With C)"
 
 #: src/SUMMARY.md
 msgid "Calling C with Bindgen"
-msgstr ""
+msgstr "استدعاء C باستخدام Bindgen (Calling C with Bindgen)"
 
 #: src/SUMMARY.md
 msgid "Calling Rust from C"
-msgstr ""
+msgstr "استدعاء Rust من C (Calling Rust from C)"
 
 #: src/SUMMARY.md src/android/interoperability/cpp.md
 msgid "With C++"
-msgstr ""
+msgstr "مع C++ (With C++)"
 
 #: src/SUMMARY.md src/android/interoperability/cpp/bridge.md
 msgid "The Bridge Module"
-msgstr ""
+msgstr "وحدة الجسر (The Bridge Module)"
 
 #: src/SUMMARY.md
 msgid "Rust Bridge"
-msgstr ""
+msgstr "جسر Rust (Rust Bridge)"
 
 #: src/SUMMARY.md src/android/interoperability/cpp/generated-cpp.md
 msgid "Generated C++"
-msgstr ""
+msgstr "C++ المُولَّد (Generated C++)"
 
 #: src/SUMMARY.md
 msgid "C++ Bridge"
-msgstr ""
+msgstr "جسر C++ (C++ Bridge)"
 
 #: src/SUMMARY.md src/android/interoperability/cpp/shared-types.md
 msgid "Shared Types"
-msgstr ""
+msgstr "الأنواع المشتركة (Shared Types)"
 
 #: src/SUMMARY.md src/android/interoperability/cpp/shared-enums.md
 msgid "Shared Enums"
-msgstr ""
+msgstr "التعدادات المشتركة (Shared Enums)"
 
 #: src/SUMMARY.md src/android/interoperability/cpp/rust-result.md
 msgid "Rust Error Handling"
-msgstr ""
+msgstr "معالجة الأخطاء في Rust (Rust Error Handling)"
 
 #: src/SUMMARY.md src/android/interoperability/cpp/cpp-exception.md
 msgid "C++ Error Handling"
-msgstr ""
+msgstr "معالجة الأخطاء في C++ (C++ Error Handling)"
 
 #: src/SUMMARY.md src/android/interoperability/cpp/type-mapping.md
 msgid "Additional Types"
-msgstr ""
+msgstr "الأنواع الإضافية (Additional Types)"
 
 #: src/SUMMARY.md
 msgid "Building for Android: C++"
-msgstr ""
+msgstr "البناء لأندرويد: C++ (Building for Android: C++)"
 
 #: src/SUMMARY.md
 msgid "Building for Android: Genrules"
-msgstr ""
+msgstr "البناء لأندرويد: قواعد التوليد (Building for Android: Genrules)"
 
 #: src/SUMMARY.md
 msgid "Building for Android: Rust"
-msgstr ""
+msgstr "البناء لأندرويد: Rust (Building for Android: Rust)"
 
 #: src/SUMMARY.md
 msgid "With Java"
-msgstr ""
+msgstr "مع Java (With Java)"
 
 #: src/SUMMARY.md src/exercises/android/morning.md
 #: src/exercises/bare-metal/morning.md src/exercises/bare-metal/afternoon.md
 #: src/concurrency/sync-exercises.md src/concurrency/async-exercises.md
 msgid "Exercises"
-msgstr ""
+msgstr "التمارين"
 
 #: src/SUMMARY.md
 msgid "Chromium"
-msgstr ""
+msgstr "كروميوم (Chromium)"
 
 #: src/SUMMARY.md src/chromium/cargo.md
 msgid "Comparing Chromium and Cargo Ecosystems"
 msgstr ""
+"مقارنة بين بيئات Chromium و Cargo (Comparing Chromium and Cargo Ecosystems)"
 
 #: src/SUMMARY.md
 msgid "Policy"
-msgstr ""
+msgstr "سياسة الاستخدام (Policy)"
 
 #: src/SUMMARY.md
 msgid "Unsafe Code"
-msgstr ""
+msgstr "الكود غير الآمن (Unsafe Code)"
 
 #: src/SUMMARY.md src/chromium/build-rules/depending.md
 msgid "Depending on Rust Code from Chromium C++"
 msgstr ""
+"الاعتماد على كود Rust من Chromium C++ (Depending on Rust Code from Chromium "
+"C++)"
 
 #: src/SUMMARY.md src/chromium/build-rules/vscode.md
 msgid "Visual Studio Code"
-msgstr ""
+msgstr "فيجوال ستوديو كود (Visual Studio Code)"
 
 #: src/SUMMARY.md src/exercises/chromium/third-party.md
 msgid "Exercise"
-msgstr ""
+msgstr "تمرين (Exercise)"
 
 #: src/SUMMARY.md src/chromium/testing/rust-gtest-interop.md
 msgid "`rust_gtest_interop` Library"
-msgstr ""
+msgstr "مكتبة `rust_gtest_interop`"
 
 #: src/SUMMARY.md src/chromium/testing/build-gn.md
 msgid "GN Rules for Rust Tests"
-msgstr ""
+msgstr "قواعد GN لاختبارات Rust (GN Rules for Rust Tests)"
 
 #: src/SUMMARY.md src/chromium/testing/chromium-import-macro.md
 msgid "`chromium::import!` Macro"
-msgstr ""
+msgstr "ماكرو Macro `chromium::import!`"
 
 #: src/SUMMARY.md src/chromium/interoperability-with-cpp.md
 msgid "Interoperability with C++"
-msgstr ""
+msgstr "التشغيل البيني مع C++ (Interoperability with C++)"
 
 #: src/SUMMARY.md src/chromium/interoperability-with-cpp/example-bindings.md
 msgid "Example Bindings"
-msgstr ""
+msgstr "أمثلة على الربط (Example Bindings)"
 
 #: src/SUMMARY.md src/chromium/interoperability-with-cpp/limitations-of-cxx.md
 msgid "Limitations of CXX"