县里曾三令五申，干什么都得按法律办事。

The county repeatedly enjoined that everything must be done according to law.

而成语“三令五申”就是由孙武反复说明他的命令而来。

From how Sun Wu repeated his orders comes the idiom "Repeating an order time and again".

他可怕的父亲，由装饰着英式粗鲁的胡须的迈克尔冈本扮演，三令五申地对他强调，这是一个新媒体时代。

His formidable father, played by Michael Gambon with England's gruffest beard, makes clear to him that this is a new media age.