diff --git a/library/development.po b/library/development.po
index ef66cf89b22..0272023235a 100644
--- a/library/development.po
+++ b/library/development.po
@@ -31,7 +31,10 @@ msgid ""
 "contains frameworks for writing unit tests that automatically exercise code "
 "and verify that the expected output is produced."
 msgstr ""
+"本章所描述的模組可以幫助你編寫軟體。例如 :mod:`pydoc` 模組可以根據模組的內容"
+"生成文件；:mod:`doctest` 和 :mod:`unittest` 模組則包含編寫單元測試的框架，這"
+"些測試程式碼會自動執行並驗證輸出結果是否正確。"
 
 #: ../../library/development.rst:13
 msgid "The list of modules described in this chapter is:"
-msgstr ""
+msgstr "本章節所描述的模組列表為："