pipe down

动词 pipe down:

1. become quiet or quieter
   同义词：quieten, hush, quiet, quiesce, quiet down

1. Pipe down, children. I'm trying to listen to the news on the radio.
   静一静，孩子们，我想听无线电里播送的新闻。
2. I told her to pipe down but she still babbled on.
   我叫她闭嘴，可她还是唠叨个没完。
3. She told the children to pipe down while she was talking on the telephone.
   她告诉孩子别吵了，她正在打电话。