concern oneself with/about/over

1. 关心

A good doctor should always concern himself with the health of his patients.

一位好医生应时刻关心病人的健康。

of concern

1. 重要的

It's a matter of concern.

这件事至关重要。

as/so far as ... be concerned

1. 就……而言

As far as I'm concerned, he can do whatever he likes.

就我而言, 他可以喜欢什么就做什么。

to whom it may concern

1. (用作正式信件的开头)敬启者

You should begin a formal letter with "To whom it may concern. "

正式信件的开头你应写"敬启者"。

have a concern in

1. 在……中有利害关系; 在……中有一份

He had a concern in the business.

他是这个企业的股东。

have no concern with

1. 与……无关

I have no concern with the matter.

我与那事无关。