The president is said to receive an anonymous letter yesterday.
听说总裁昨天收到一封匿名信。
的,主动提供的;The president is said to receive an anonymous letter yesterday.
听说总裁昨天收到一封匿名信。
The writer wishes to remain anonymous.
作者希望姓名不公
。
It is an anonymous letter.

一封匿名信。
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