acquaintance

She was a casual acquaintance of my family in Vienna.

她是我们家在维也纳的一个交情不深的朋友。

He heard about the job through a mutual acquaintance (= someone you and another person both know ) .

他是通过一个双方都认识的人知道有这份工作的。

I should be delighted to make Mrs McGough’s acquaintance.

我很高兴能认识麦高夫太太。

The practice of a lawyer requires acquaintance with court procedures.

当律师要熟悉法庭程序。