"If you sleep with your mouth open, she will be able to see the tooth hole," said Sammy. The class laughed. Come on! But that just gave me a great idea! "How did you get the Tooth Fairy to leave the money?"

“如果你张着嘴睡觉，她就能看到牙洞。”萨米说。全班笑了。拜托！但这给了我一个好主意！“你是怎么让牙仙子留下钱的？”

youdao

Will you get wrinkles if you sleep with eye makeup?

如果带着眼妆睡觉，会长皱纹么？

youdao

If you sleep on your side, you have usually got a well-balanced personality.

如果你侧卧而睡，则你性格平和。

youdao

And,if you wish someone good night, you might say, "sleep tight -- don't let the bed bugs bite."

VOA: special.2009.06.28

But my only criterion is if you talk in your sleep, now that's not allowed because talking is not allowed.

我唯一的要求就是别说梦话,因为我的课上不准说话的

耶鲁公开课 - 基础物理课程节选

Next, if you're going to sleep, I ask you to sit between two non-sleepers because sometimes what happens, the whole row will topple over.

另外,如果你要睡觉的话,请坐在两个不睡觉的同学中间,因为有时候,整排的人都倒下了

耶鲁公开课 - 基础物理课程节选

In a nutshell, if you sleep for eight hours a night go to work and find yourself lolling and drooling on the keyboard, you aren't getting enough.

BBC: NEWS | UK | Magazine | Why should we have eight hours' sleep?

Don't start reading this at bedtime if you need sleep before going to work.

FORBES: Fact and Comment

The emerging markets, if you can sleep at night, that is.

FORBES: In Emerging Markets vs Developed Markets, EMs Win