他通过认真学习掌握了这门语言。

He acquired a knowledge of the language by careful study.

youdao

她通过认真学习而懂得了英语。

She acquired a knowledge of English by careful study.

youdao

认真学习，否则你不能通过考试。

Conscientiously study, or you can not test.

youdao

要认真学习，否则你就不能通过这次考试。

Study hard, or you can't pass the exam.

youdao

要认真学习，否则你就不能通过这次考试。

Study hard, or you can't pass the exam.

youdao