乱来

nǐ kě bù néng luàn lái

你可不能乱来。

Just be sensible about it.

bié luàn lái hái zi men

别乱来，孩子们。

Behave yourselves, children.

tā shì gè chí zhī yǐ héng de rén ér qiě tā yě hěn xǐ huan jiā tíng shēng huó xià le bān jiù huí jiā bù huì luàn lái

他是个持之以恒的人，而且他也很喜欢家庭生活，下了班就回家，不会乱来。

He was always a constant and consistent man, and he enjoyed his family life too and wouldn't hang around before heading for home.