Translate library/string.po rst:117 (python#687)

* 1022_meetup_library/string_rst117

* rst:117 v2

* rst:117 v3

Author: beccalzh

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 ""