等于: reply to

v. 回答

I was unsure how to reply tothis question.

我拿不准该如何回答这个问题。He never replied to any of my letters.

他从来没有回复过我的任何一封信。

How should I reply to this question?

我该怎么回答这个问题呢

He couldn't answer the question.

他没有能回答那个问题。