After they had quarrelled there was a pained silence between them.

"他们发生争吵以后,双方都因感情上受到伤害而保持沉默。"

He is mute on the subject of social system.

他对社会制度的问题保持沉默。

I'd never have breathed a syllable if he'd kept quiet.

如果他时保持沉默的话，我决不会说一个字的。

They remained dumb at the meeting.

他们在会上保持沉默。

He was silent on the subject.

他对这个问题保持沉默。