acquaint oneself with

1. 知悉

He acquainted himself thoroughly with every aspect of the question.

他彻底明了这问题的每一个涵盖面。

acquaint sb. with

1. 把……通知某人; 使某人了解

They acquainted Chinese readers with recent happenings in the Middle East.

他们向中国读者介绍中东最近的动态。

acquainted with

1. 与……相识

They are acquainted with each other.

他们互相认识。

2. 了解

He is already acquainted with the facts.

他已知道那些事实了。