Lets sleep together.

让我们睡在一起。

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A lioness lets out a mighty yawn to shake away the sleep and be ready for the wildebeests which were headed in the direction of the pride.

一头母狮打了一个有力的哈欠，它的睡眠被催醒了，准备面对着骄傲地朝着它方向的角马。

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Yawnlog is a wacky new site that lets you track how much sleep you're getting, note how good the sleep was, record your dreams and compare all of that information with your friends.

Yawnlog这个古怪的新网站，可以让您追踪你睡了多久，了解你的睡眠质量如何，并且和你的朋友进行比较。

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Three cheers for Professor John Zimmerman, who's finally doing some research to benefit Joe Public, and who has invented a device that lets parents sleep in late and put the kids to bed early on those long summer days.

ENGADGET: 'Reverse Alarm Clock' keeps the kids in bed so you can party

But we also rely on a certain order in our lives, a certain sense of security that lets us sleep safely in our beds and walk around our neighborhoods free from fear, and go about our daily lives without being the victims of crime.

WHITEHOUSE: President Obama Honors Fallen Law Enforcement Officers

Riding the gyrations of the stock market up and down does not come without a certain amount of thrill, but many investors would gladly find another place in their lives for thrill-seeking and opt instead for an investment portfolio that lets them sleep at night.

FORBES: Taking A Smoother Ride In An ETF That Makes Market Timing Calls