I told her to keep quiet about it.

我叫她对此保守秘密。

《柯林斯英汉双解大词典》

It's a general rule to keep quiet in libraries and concerts.

在图书馆和音乐会中保持安静是一条基本的规则。

youdao

The students are supposed to keep quiet before the papers are handed out.

在发卷子之前，学生们应该保持安静。

youdao

For if I say that this is to disobey the god and because of this it is impossible to keep quiet, you will not be persuaded by me on the grounds that I am being ironic.

因为假设我说那是违悖神意,所以我无法保静默，你们不会被我说服,反而会以为我语带讽刺；

耶鲁公开课 - 政治哲学导论课程节选

Secondly, as we go to the more advanced part of the course, we'll take a result from this part of the blackboard, stick it into the second part and keep manipulating, so if I screwed up in the beginning and you guys keep quiet, we'll have to do the whole thing again.

其次,随着我们课程的深入,我们需要把黑板这边的计算结果,抄到黑板的那边,不停地这么做,如果我一开始就写错了,而你们又不出声,我们就得全部重新来过

耶鲁公开课 - 基础物理课程节选

Colony is a Latin word ultimately for colonia and the Roman colonies were, first of all,garrisons that they planted in land they had conquered to keep the people quiet.

殖民地是拉丁词Colony的衍生,对于古罗马的殖民地来说,首先,派兵驻守占领的城市,震慑当地民众

耶鲁公开课 - 古希腊历史简介课程节选

If it pays for everyone to keep quiet, that's what the bureaucrats will advise.

CNN: Bring medical misdeeds into the light

Mahoney admitted to causing "pain" in his marriage, but he denied paying the aide to keep quiet.

CNN: Democrats widen House majority, CNN projects

For them to keep quiet, especially after what happened before last week's England international, was a good thing.

BBC: Micah Richards column