精通

  1. to be proficient in
  2. to master (a subject)

例句

他精通英文。

tā jīng tōng yīng wén.

He has a good grasp of English.

她精通法语。

tā jīng tōng fǎ yǔ.

She is proficient in French.

他精通波斯语。

tā jīng tōng bō sī yǔ.

He is proficient in Farsi.