The only thing I can do is keep quiet and sit this one out.

我能做的只有保持沉默，坐等这件事结束。

《柯林斯英汉双解大词典》

Children, keep quiet please.

孩子们，请保持安静。

youdao

Keep quiet, please.

请保持安静。

youdao

One thing I do ask you: If you are not doing it, if you don't participate, simply just keep quiet.

我对你们的一个要求是：,如果你不做，不参与的同学，请保持安静。

哈佛公开课 - 幸福课课程节选

I think it's actually owned by McDonald's. But I think they keep that on the quiet

我想它实际上是麦当劳旗下的。但是我想他们不想宣传这个，

知道普雷特公司吗？ - SpeakingMax英语口语达人

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

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

CNN: Bring medical misdeeds into the light

So I decided to just keep quiet and let them come up with Plan B.

FORBES: Women and Overperforming: Don't Go for the Bait

But get Burkle going about his latest business scheme, and he can't keep quiet.

FORBES: Shop Till You Flop