此信需要答复。

This letter requires an answer.

youdao

我请求你在收到此信后30天内作出答复，否则，此次邀约将自动失效，不再另行通知，届时我将考虑其它人选。

I request you to kindly respond within 30 days of receiving this letter, failing which, this offer would be canceled without further notice and I shall be considering someone else.

youdao

本人翘首盼望对此信件的即刻答复。

I'm looking forward to an instantaneous reply to this letter.

youdao