害群之马

wǒ zài chǎng li hǎo bǐ shì yī jiā zhī zhǔ shì bù néng róng rěn nà zhǒng hài qún zhī mǎ de

我在厂里好比是一家之主，是不能容忍那种害群之马的。

As the owner of the factory I'm like the head of a family, and as such I can't allow any black sheep among my employees.

měi yī gè tuán tǐ zhōng dōu yǒu hài qún zhī mǎ

每一个团体中都有害群之马。

There's a black sheep in every flock.