如果你要翻译得好，必须精通两种语言。

If you wish to translate well, you must know both languages well.

youdao

本人因工作需要，需精通英语、日语两种语言。

Cause of the job, I need to be proficient in English and Japanese.

youdao

要精通两种不同的语言是困难的。

He is difficult to get along with.

youdao

要精通两种不同的语言是困难的。

He is difficult to get along with.

youdao