A new study found better results in four-year-olds who go to bed around the same time every night and sleep at least eleven hours.

VOA: special.2010.06.09

We banned that drug and I haven't heard anybody saying that that was a wrong decision, that we should allow pregnant women who want to sleep better to take a drug that will mean their children are born without limbs.

我们禁止了这种药物的使用，但我们从未听说,有人认为这是个错误的决定，也从未有人说，我们应该允许,失眠的孕妇使用这种药品,即使她们的孩子可能从出生就没有四肢。

普林斯顿公开课 - 人性课程节选

We'd better get some sleep.

我们最好先睡一会儿。

I'd better 实战 - SpeakingMax英语口语达人

And she says to me, " "You know, I'd better have a decaf because it's kind of late and I want to be able to sleep."

这时，她对我说，“我最好喝一杯无咖啡因的咖啡,因为现在有点晚了，我怕失眠“

耶鲁公开课 - 心理学导论课程节选