Please keep it down. Could you lower your voice?

你能不能把声音降低一点？

youdao

Excuse me, Ladies and gentlemen. Could you please keep your voice down as it is disturbing other guests? Thank you for understanding.

女士们，先生们，打扰一下。请您小点声音好吗？以免影响其他客人。谢谢您的理解。

youdao

"Copy down this sentence and keep it in mind, please. "said the old teacher.

“把这个句子抄下来，并把它记住，”那位老师说。（直接引语）

youdao

But keep it down, please.

WSJ: The art of the nap: Tilda Swinton at MoMA

So people, please- at a wedding ceremony, keep your arms down and if you must snap your own pictures, do it discreetly.

FORBES: Horrible Wedding Guests + Technology = Nasty Nuptials