One mangy sheep spoils a whole flock.

一只臭羊糟蹋了一群羊。

相关名言

I am not afraid of an army of lions led by a sheep; I am afraid of an army of sheep led by a lion.

我不怕一群由羊带领的狮子;我害怕狮子带领的羊群。

It is the part of a good shepherd to shear his flock, not to skin it.

好牧人的职责是剪羊毛,而不是剥皮。

The cow is milked, not the ox; the sheep is shorn, not the horse.

牛是挤奶的,牛不是挤奶的;剪羊毛的是羊,不是马。