划清界限

nǐ bì xū gēn tā huà qīng jiè xiàn

你必须跟他划清界限。

You must make a clean break with him.

zài gōng zuò hé jiā tíng shēng huó zhī jiān huà qīng jiè xiàn shì hěn kùn nan de

在工作和家庭生活之间划清界限是很困难的。

It's hard to draw boundaries between work and home life.

dà shǐ yǔ tā fù shǒu de yán lùn huà qīng jiè xiàn

大使与他副手的言论划清界限。

The ambassador disassociated himself from this deputy's remarks.