I told them to please be quiet or I would punish them.

VOA: special.2009.05.03

There is slow-wave sleep or "quiet sleep."

第一种是慢波睡眠，“安静的睡眠”

耶鲁公开课 - 心理学导论课程节选

But when you're there, like say, on a weekday or weekend when it's like quiet,

如果你在一个安静的日子，比如某个工作日或周末，去那儿的话，

艺术画廊，来吧 - SpeakingMax英语口语达人

And several times a year, a generally quiet part of town with no big buildings or yachts comes alive with a flourish.

VOA: standard.2010.04.19