diff --git a/library/string.po b/library/string.po
index 879d07e95a..2b92fee6ae 100644
--- a/library/string.po
+++ b/library/string.po
@@ -150,6 +150,10 @@ msgid ""
 "by :meth:`vformat` to break the string into either literal text, or "
 "replacement fields."
 msgstr ""
+"將 format_string 放入迴圈，並回傳一個可疊代物件，其元素為 "
+"(*literal_text*, *field_name*, *format_spec*, *conversion*)。這會被"
+" :meth:`vformat` 用於將字串裁切為字面文本或"
+"替換欄位。"
 
 #: ../../library/string.rst:122
 msgid ""