diff --git a/installing/index.po b/installing/index.po
index babc94c67b..62c4d707bd 100644
--- a/installing/index.po
+++ b/installing/index.po
@@ -1,16 +1,17 @@
 # SOME DESCRIPTIVE TITLE.
-# Copyright (C) 2001-2018, Python Software Foundation
+# Copyright (C) 2001-2021, Python Software Foundation
 # This file is distributed under the same license as the Python package.
 #
 # Translators:
 # Leon H., 2017
 # 豆豆 (Tommy Lin) <gnat_lin@hotmail.com>, 2017
+# Steven Hsu <hsuhaochun@gmail.com>, 2021
 msgid ""
 msgstr ""
-"Project-Id-Version: Python 3.7\n"
+"Project-Id-Version: Python 3.9\n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2021-10-02 17:19+0000\n"
-"PO-Revision-Date: 2018-05-23 14:37+0000\n"
+"PO-Revision-Date: 2021-10-03 09:41+0800\n"
 "Last-Translator: Adrian Liaw <adrianliaw2000@gmail.com>\n"
 "Language-Team: Chinese - TAIWAN (https://github.com/python/python-docs-zh-"
 "tw)\n"
@@ -19,6 +20,7 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=1; plural=0;\n"
+"X-Generator: Poedit 2.4.3\n"
 
 #: ../../installing/index.rst:7
 msgid "Installing Python Modules"
@@ -26,7 +28,7 @@ msgstr "安裝 Python 模組"
 
 #: ../../installing/index.rst:0
 msgid "Email"
-msgstr ""
+msgstr "電子郵件"
 
 #: ../../installing/index.rst:9
 msgid "distutils-sig@python.org"
@@ -38,6 +40,8 @@ msgid ""
 "supporting community of contributors and users that also make their software "
 "available for other Python developers to use under open source license terms."
 msgstr ""
+"作為一個普及的開源開發專案，Python 有一個活躍的支持社群，由其貢獻者及使用者組"
+"成，而他們也讓他們的軟體可被其他 Python 開發者在開源授權條款下使用。"
 
 #: ../../installing/index.rst:15
 msgid ""
@@ -46,6 +50,9 @@ msgid ""
 "rare!) problems, as well as potentially contributing their own solutions to "
 "the common pool."
 msgstr ""
+"這樣可以讓 Python 使用者們有效地共享和合作，並受益於其他人對常見（有時甚至是"
+"罕見）的問題已經建立的解決方案，更可以在公用社群中潛在地貢獻他們自己的解決方"
+"案。"
 
 #: ../../installing/index.rst:20
 msgid ""
@@ -53,6 +60,8 @@ msgid ""
 "creating and sharing your own Python projects, refer to the :ref:"
 "`distribution guide <distributing-index>`."
 msgstr ""
+"這份指南涵蓋了上述過程中的安裝部分。如果是要建立及分享您自己的 Python 專案，"
+"請參考\\ :ref:`發布 Python 模組 <distributing-index>`\\ 指南。"
 
 #: ../../installing/index.rst:26
 msgid ""
@@ -61,16 +70,20 @@ msgid ""
 "source software. Please take such policies into account when making use of "
 "the distribution and installation tools provided with Python."
 msgstr ""
+"對於企業和其他機構的使用者，要注意到，許多組織對於使用和貢獻開源軟體都有自己"
+"的政策。在開始使用配備 Python 的發布及安裝工具時，請將那些政策納入考量。"
 
 #: ../../installing/index.rst:33
 msgid "Key terms"
-msgstr ""
+msgstr "關鍵術語"
 
 #: ../../installing/index.rst:35
 msgid ""
 "``pip`` is the preferred installer program. Starting with Python 3.4, it is "
 "included by default with the Python binary installers."
 msgstr ""
+"``pip`` 是首選的安裝程式。從 Python 3.4 開始，它被預設包含在 Python 二進制安"
+"裝程式中。"
 
 #: ../../installing/index.rst:37
 msgid ""
@@ -78,6 +91,8 @@ msgid ""
 "packages to be installed for use by a particular application, rather than "
 "being installed system wide."
 msgstr ""
+"*virtual environment（虛擬環境）*\\ 是一種半隔離的 Python 環境，可以為某個特"
+"定應用程式安裝其所需的套件，而不用在整個系統上安裝它們。"
 
 #: ../../installing/index.rst:40
 msgid ""
@@ -85,6 +100,8 @@ msgid ""
 "been part of Python since Python 3.3. Starting with Python 3.4, it defaults "
 "to installing ``pip`` into all created virtual environments."
 msgstr ""
+"``venv`` 是建立虛擬環境的標準工具，它從 Python 3.3 開始成為 Python 的一部分。"
+"從 Python 3.4 開始，它會預設地安裝 ``pip`` 到所有被建立的虛擬環境。"
 
 #: ../../installing/index.rst:43
 msgid ""
@@ -93,12 +110,17 @@ msgid ""
 "3.4, which either don't provide ``venv`` at all, or aren't able to "
 "automatically install ``pip`` into created environments."
 msgstr ""
+"``virtualenv`` 是 ``venv`` 的一個第三方替代方案（及其前身）。它使虛擬環境可以"
+"在 Python 3.4 之前的版本被使用，那些版本要不是根本沒提供 ``venv``，就是無法自"
+"動安裝 ``pip`` 到所建立的環境中。"
 
 #: ../../installing/index.rst:47
 msgid ""
 "The `Python Package Index <https://pypi.org>`__ is a public repository of "
 "open source licensed packages made available for use by other Python users."
 msgstr ""
+"`Python 套件索引 (Python Package Index) <https://pypi.org>`__ 是開源授權套件"
+"的一個公共儲存庫，其中的套件皆可被其他 Python 使用者所使用。"
 
 #: ../../installing/index.rst:50
 msgid ""
@@ -109,6 +131,11 @@ msgid ""
 "issue trackers on both `GitHub <https://github.com/pypa>`__ and `Bitbucket "
 "<https://bitbucket.org/pypa/>`__."
 msgstr ""
+"`Python 封裝管理站 (Python Packaging Authority) <https://www.pypa.io/>`__ 是"
+"一個由開發者和說明文件作者組成的團隊，負責維護及改進標準封裝工具，以及相關的"
+"元資料 (metadata) 和檔案格式標準。他們在 `GitHub <https://github.com/"
+"pypa>`__ 和 `Bitbucket <https://bitbucket.org/pypa/>`__ 這兩個平台上維護各種"
+"工具、說明文件及問題追蹤系統。"
 
 #: ../../installing/index.rst:57
 msgid ""
@@ -119,39 +146,51 @@ msgid ""
 "library, but its name lives on in other ways (such as the name of the "
 "mailing list used to coordinate Python packaging standards development)."
 msgstr ""
+"``distutils`` 是最早的建置和發布系統，於 1998 年首次被加入 Python 標準函式"
+"庫。雖然直接使用 ``distutils`` 的方式已經被逐步淘汰，它仍然是現今封裝和發布的"
+"基礎結構根基，而且它不僅仍然是標準函式庫的一部分，它的名稱也以其他的方式存活"
+"著（例如：用於協調 Python 封裝標準開發的郵寄清單就是以它命名）。"
 
 #: ../../installing/index.rst:65
 msgid ""
 "The use of ``venv`` is now recommended for creating virtual environments."
-msgstr ""
+msgstr "對於建立虛擬環境，現在推薦使用 ``venv``。"
 
 #: ../../installing/index.rst:70
 msgid ""
 "`Python Packaging User Guide: Creating and using virtual environments "
 "<https://packaging.python.org/installing/#creating-virtual-environments>`__"
 msgstr ""
+"`Python 封裝使用者指南：建立和使用虛擬環境 <https://packaging.python.org/"
+"installing/#creating-virtual-environments>`__"
 
 #: ../../installing/index.rst:75
 msgid "Basic usage"
-msgstr ""
+msgstr "基本用法"
 
 #: ../../installing/index.rst:77
 msgid ""
 "The standard packaging tools are all designed to be used from the command "
 "line."
-msgstr ""
+msgstr "標準封裝工具皆是以能從命令列使用的方式被設計的。"
 
 #: ../../installing/index.rst:80
 msgid ""
 "The following command will install the latest version of a module and its "
 "dependencies from the Python Package Index::"
 msgstr ""
+"以下指令將從 Python 套件索引安裝一個模組的最新版本及其依賴套件 "
+"(dependencies)：\n"
+"\n"
+"::"
 
 #: ../../installing/index.rst:87
 msgid ""
 "For POSIX users (including macOS and Linux users), the examples in this "
 "guide assume the use of a :term:`virtual environment`."
 msgstr ""
+"對於 POSIX 使用者（包括 macOS 和 Linux 使用者），本指南中的範例皆假設有使用 :"
+"term:`virtual environment`\\ 。"
 
 #: ../../installing/index.rst:90
 msgid ""
@@ -159,6 +198,8 @@ msgid ""
 "adjust the system PATH environment variable was selected when installing "
 "Python."
 msgstr ""
+"對於 Windows 使用者，本指南中的範例皆假設在安裝 Python 時，「可調整系統 PATH "
+"環境變數」的選項已被選取。"
 
 #: ../../installing/index.rst:94
 msgid ""
@@ -167,6 +208,11 @@ msgid ""
 "other special character which get interpreted by shell, the package name and "
 "the version should be enclosed within double quotes::"
 msgstr ""
+"在命令列中直接指定一個明確的或最小的版本也是可行的。當使用像是 ``>``、``<`` "
+"的比較運算子，或某些可被 shell 所解釋的其他特殊字元時，套件名稱與版本編號應該"
+"要放在雙引號內：\n"
+"\n"
+"::"
 
 #: ../../installing/index.rst:102
 msgid ""
@@ -174,12 +220,18 @@ msgid ""
 "it again will have no effect. Upgrading existing modules must be requested "
 "explicitly::"
 msgstr ""
+"通常，如果一個合適的模組已被安裝，嘗試再次安裝它將不會有任何效果。要升級現有"
+"的模組就必須明確地請求：\n"
+"\n"
+"::"
 
 #: ../../installing/index.rst:108
 msgid ""
 "More information and resources regarding ``pip`` and its capabilities can be "
 "found in the `Python Packaging User Guide <https://packaging.python.org>`__."
 msgstr ""
+"關於 ``pip`` 及其能力的更多資訊和資源，可以在 `Python 封裝使用者指南 "
+"<https://packaging.python.org>`__\\ 中找到。"
 
 #: ../../installing/index.rst:111
 msgid ""
@@ -187,24 +239,28 @@ msgid ""
 "Installing packages into an active virtual environment uses the commands "
 "shown above."
 msgstr ""
+"虛擬環境的建立是使用 :mod:`venv` 模組來完成。要在一個已啟用的虛擬環境中安裝套"
+"件，可使用前面展示的指令。"
 
 #: ../../installing/index.rst:117
 msgid ""
 "`Python Packaging User Guide: Installing Python Distribution Packages "
 "<https://packaging.python.org/installing/>`__"
 msgstr ""
+"`Python 封裝使用者指南：安裝 Python 發布套件 <https://packaging.python.org/"
+"installing/>`__"
 
 #: ../../installing/index.rst:122
 msgid "How do I ...?"
-msgstr ""
+msgstr "我該如何...？"
 
 #: ../../installing/index.rst:124
 msgid "These are quick answers or links for some common tasks."
-msgstr ""
+msgstr "接下來是關於一些常見任務的快速解答或連結。"
 
 #: ../../installing/index.rst:127
 msgid "... install ``pip`` in versions of Python prior to Python 3.4?"
-msgstr ""
+msgstr "...在 Python 3.4 之前的 Python 版本中安裝 ``pip``？"
 
 #: ../../installing/index.rst:129
 msgid ""
@@ -212,26 +268,32 @@ msgid ""
 "``pip`` needs to be \"bootstrapped\" as described in the Python Packaging "
 "User Guide."
 msgstr ""
+"Python 是從 Python 3.4 才開始綁定 ``pip`` 的。對於更早的版本，\\ ``pip`` 需要"
+"被「自助安裝 (bootstrapped)」，請參考 Python 封裝使用者指南中的說明。"
 
 #: ../../installing/index.rst:135
 msgid ""
 "`Python Packaging User Guide: Requirements for Installing Packages <https://"
 "packaging.python.org/installing/#requirements-for-installing-packages>`__"
 msgstr ""
+"`Python 封裝使用者指南：安裝套件的需求 <https://packaging.python.org/"
+"installing/#requirements-for-installing-packages>`__"
 
 #: ../../installing/index.rst:142
 msgid "... install packages just for the current user?"
-msgstr ""
+msgstr "...只為目前的使用者安裝套件？"
 
 #: ../../installing/index.rst:144
 msgid ""
 "Passing the ``--user`` option to ``python -m pip install`` will install a "
 "package just for the current user, rather than for all users of the system."
 msgstr ""
+"把 ``--user`` 選項傳給 ``python -m pip install``，這樣將會只為目前使用者而非"
+"系統的所有使用者安裝套件。"
 
 #: ../../installing/index.rst:149
 msgid "... install scientific Python packages?"
-msgstr ""
+msgstr "...安裝科學的 Python 套件？"
 
 #: ../../installing/index.rst:151
 msgid ""
@@ -241,16 +303,21 @@ msgid ""
 "means <https://packaging.python.org/science/>`__ rather than attempting to "
 "install them with ``pip``."
 msgstr ""
+"許多科學類 Python 套件都有複雜的二進制依賴套件，且目前不太容易直接使用 "
+"``pip`` 安裝。目前為止，使用\\ `其他方法 <https://packaging.python.org/"
+"science/>`__\\ 而非嘗試用 ``pip`` 來安裝它們，對使用者來說通常會更簡單。"
 
 #: ../../installing/index.rst:159
 msgid ""
 "`Python Packaging User Guide: Installing Scientific Packages <https://"
 "packaging.python.org/science/>`__"
 msgstr ""
+"`Python 封裝使用者指南：安裝科學套件 <https://packaging.python.org/science/"
+">`__"
 
 #: ../../installing/index.rst:164
 msgid "... work with multiple versions of Python installed in parallel?"
-msgstr ""
+msgstr "...平行安裝多個 Python 版本並使用它們？"
 
 #: ../../installing/index.rst:166
 msgid ""
@@ -258,24 +325,32 @@ msgid ""
 "in combination with the ``-m`` switch to run the appropriate copy of "
 "``pip``::"
 msgstr ""
+"在 Linux、macOS 以及其他 POSIX 系統中，使用帶有版本編號的 Python 指令並結合 "
+"``-m`` 開關參數 (switch)，來運行 ``pip`` 的適當副本：\n"
+"\n"
+"::"
 
 #: ../../installing/index.rst:175
 msgid "Appropriately versioned ``pip`` commands may also be available."
-msgstr ""
+msgstr "使用帶有合適版本編號的 ``pip`` 指令，也是可行的。"
 
 #: ../../installing/index.rst:177
 msgid ""
 "On Windows, use the ``py`` Python launcher in combination with the ``-m`` "
 "switch::"
 msgstr ""
+"在 Windows 中，使用 Python 啟動指令 ``py`` 並結合 ``-m`` 開關參數 "
+"(switch)：\n"
+"\n"
+"::"
 
 #: ../../installing/index.rst:194
 msgid "Common installation issues"
-msgstr ""
+msgstr "常見的安裝問題"
 
 #: ../../installing/index.rst:197
 msgid "Installing into the system Python on Linux"
-msgstr ""
+msgstr "在 Linux 上安裝套件至系統 Python"
 
 #: ../../installing/index.rst:199
 msgid ""
@@ -285,22 +360,30 @@ msgid ""
 "package manager and other components of the system if a component is "
 "unexpectedly upgraded using ``pip``."
 msgstr ""
+"在 Linux 系統，Python 的某個安裝版本通常會被內含在 Linux 的發行版中。要安裝套"
+"件到這個 Python 版本上需要系統的 root 權限，並且可能會干擾到系統套件管理器的"
+"運作。如果其他系統組件非預期地以 ``pip`` 被升級，也會干擾這些組件的運作。"
 
 #: ../../installing/index.rst:205
 msgid ""
 "On such systems, it is often better to use a virtual environment or a per-"
 "user installation when installing packages with ``pip``."
 msgstr ""
+"在這樣的系統上，以 ``pip`` 安裝套件時，通常較好的方式是使用虛擬環境，或以個別"
+"使用者安裝。"
 
 #: ../../installing/index.rst:210
 msgid "Pip not installed"
-msgstr ""
+msgstr "未安裝 pip"
 
 #: ../../installing/index.rst:212
 msgid ""
 "It is possible that ``pip`` does not get installed by default. One potential "
 "fix is::"
 msgstr ""
+"``pip`` 沒有預設被安裝也是有可能的。一個潛在的解法是：\n"
+"\n"
+"::"
 
 #: ../../installing/index.rst:216
 msgid ""
@@ -308,10 +391,12 @@ msgid ""
 "python.org/tutorials/installing-packages/#install-pip-setuptools-and-"
 "wheel>`__"
 msgstr ""
+"這裡還有其他關於\\ `安裝 pip <https://packaging.python.org/tutorials/"
+"installing-packages/#install-pip-setuptools-and-wheel>`__\\ 的資源。"
 
 #: ../../installing/index.rst:221
 msgid "Installing binary extensions"
-msgstr ""
+msgstr "安裝二進制擴充 (binary extension)"
 
 #: ../../installing/index.rst:223
 msgid ""
@@ -319,6 +404,8 @@ msgid ""
 "users being expected to compile extension modules from source as part of the "
 "installation process."
 msgstr ""
+"Python 基本上相當倚賴以原始碼為基礎的發布方式，也會期望使用者在安裝過程的某個"
+"階段，從原始碼來編譯擴充模組。"
 
 #: ../../installing/index.rst:227
 msgid ""
@@ -328,6 +415,9 @@ msgid ""
 "more regularly able to install pre-built extensions rather than needing to "
 "build them themselves."
 msgstr ""
+"隨著引入對二進制 ``wheel`` 格式的支援，以及透過 Python 套件索引能夠至少在 "
+"Windows 和 macOS 發布 wheel 檔案，這個問題預期將會逐漸消失，因為使用者將能夠"
+"更頻繁地安裝預建置 (pre-built) 的擴充，而不再需要自己建置它們。"
 
 #: ../../installing/index.rst:233
 msgid ""
@@ -336,9 +426,14 @@ msgid ""
 "files may also help with obtaining other binary extensions without needing "
 "to build them locally."
 msgstr ""
+"有一些解決方案，可用來安裝那些還無法以預建置的 ``wheel`` 檔案被使用的\\ `科學"
+"軟體 <https://packaging.python.org/science/>`__\\ ，這些方案也有助於取得其他"
+"的二進制擴充，且無需在本機對它們進行建置。"
 
 #: ../../installing/index.rst:240
 msgid ""
 "`Python Packaging User Guide: Binary Extensions <https://packaging.python."
 "org/extensions/>`__"
 msgstr ""
+"`Python 封裝使用者指南：二進制擴充 <https://packaging.python.org/extensions/"
+">`__"
diff --git a/tutorial/modules.po b/tutorial/modules.po
index f25850d60b..df22b5b844 100644
--- a/tutorial/modules.po
+++ b/tutorial/modules.po
@@ -10,7 +10,7 @@ msgstr ""
 "Project-Id-Version: Python 3.9\n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2021-09-24 00:11+0000\n"
-"PO-Revision-Date: 2021-06-06 22:22+0800\n"
+"PO-Revision-Date: 2021-10-03 22:25+0800\n"
 "Last-Translator: Adrian Liaw <adrianliaw2000@gmail.com>\n"
 "Language-Team: Chinese - TAIWAN (https://github.com/python/python-docs-zh-"
 "tw)\n"
@@ -23,7 +23,7 @@ msgstr ""
 
 #: ../../tutorial/modules.rst:5
 msgid "Modules"
-msgstr "模組"
+msgstr "模組 (Module)"
 
 #: ../../tutorial/modules.rst:7
 msgid ""
@@ -303,6 +303,8 @@ msgid ""
 "The installation-dependent default (by convention including a ``site-"
 "packages`` directory, handled by the :mod:`site` module)."
 msgstr ""
+"與安裝相關的預設值（按慣例會包含一個 ``site-packages`` 資料夾，它是由 :mod:"
+"`site` 模組所處理）。"
 
 #: ../../tutorial/modules.rst:198
 msgid ""
@@ -388,7 +390,7 @@ msgid ""
 "the effects of optimization."
 msgstr ""
 "可以在 Python 指令上使用開關參數 (switch) :option:`-O` 或 :option:`-OO` 來減"
-"小已編譯模組的大小。指令參數 ``-O`` 刪除 assert（斷言）陳述式，\\ ``-OO`` 同"
+"小已編譯模組的大小。開關參數 ``-O`` 刪除 assert（斷言）陳述式，而 ``-OO`` 同"
 "時刪除 assert 陳述式和 __doc__ 字串。由於有些程式可能依賴於上述這些內容，因此"
 "只有在您知道自己在做什麼時，才應使用此參數。「已優化」模組有 ``opt-`` 標記，"
 "且通常較小。未來的版本可能會改變優化的效果。"
@@ -813,6 +815,3 @@ msgid ""
 msgstr ""
 "實際上，函式定義也是「被執行」的「陳述式」；在執行模組階層的函式定義時，會輸"
 "入函式名稱到模組的全域符號表。"
-
-#~ msgid "The installation-dependent default."
-#~ msgstr "安裝相關的預設值。"