名词中文翻译
中文翻译：信函文件夹
同义词：
['letter folder', 'letter case例句：1. She kept her letters in a letter folder on the desk.（她在书桌上的文件夹里保存了她的信件。）']
例句：
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1. She kept her letters in a letter folder on the desk.
她在书桌上的文件夹里保存了她的信件。
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2.The policeman opened the letter folder to find out what was inside.
警察打开信箱，查看里面的内容。
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3. He carefully placed his letters in the letter folder before leaving for work.
他小心翼翼地把信件放进信箱，准备去上班。