to pipe down
[phrase form: pipe]
01
安静下来, 闭嘴
to stop talking or making noise
例子
The moment the principal stepped onto the stage yesterday, the assembly piped down.
昨天校长走上舞台的那一刻，集会安静了下来。
02
使安静, 让闭嘴
to cause someone or something to become quiet
例子
When the argument between the two colleagues became too heated, their supervisor stepped in to pipe them down.
当两位同事之间的争论变得过于激烈时，他们的主管介入以平息他们。
