介词

1. He knew nothing regarding the case.
关于这个案子他一无所知。

2. I wrote a letter regarding my daughter's school examinations.
我写了一封关于我女儿学校考试的信。

1. 关于,有关：regard 考虑,注意,关心 | regarding 关于,有关 | regeneration 再生,正回授放大,正反馈

2. 关于：refute 反驳 | regarding 关於 | register 注册

3. 关于,对于,就...而论：past 过去(时间),超过,晚于,从...经过; | regarding 关于,对于,就...而论; | round 在周围,环绕,在...一带,在...附近;

4. 就.......而言：Refer to as 称为 | Regarding 就.......而言 | Remove 消除

1. 关于;至于
You can use regarding to indicate the subject that is being talked or written about.

e.g. He refused to divulge any information regarding the man's whereabouts.
关于那个人的行踪他拒绝透露任何信息。