email is enough.

来源: 柠檬椰子汁 于 2019-03-13 10:53:43 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (104 bytes)
本帖于 2019-03-13 10:54:36 时间, 由版主 柠檬椰子汁 编辑

A paper letter has the same effect as an email.  No need to bother.

 

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