指示预定接收者(例如信件)。

To indicate the intended recipient on (a letter, FOR example).

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例如，可以考虑下面这个目录中的内容，它看起来像一个大学一年级新生的信件集合。

For instance, consider the contents of this directory, which looks something like a collection of letters from a college freshman.

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例如，当遇到对方提出保持信件和电子邮件往来朋友关系的请求时，她只会回答不。

For example, when it comes to trying to stay friends for exchange letters and e-mails, she asid just say no.

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