Sleep! Deprive your brain of sleep long enough and you’ll simply go crazy.

睡觉! 剥夺你大脑睡足够久时间的权利你将会发疯。

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If you’re reluctant to wake up and face the day or feelings of hopelessness are driving you to sleep long hours, it’s time to seek help from a mental health professional.

如果你不愿意醒来面对生活，或者绝望迷茫的情绪促使你睡得更久，那么是时候求助于心理医生了。

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Millions more suffer from serious sleep deprivation caused by long work hours.

还有数百万人由于工作时数长导致他们严重睡眠不足。

《柯林斯英汉双解大词典》

The next time you think about going without sleep, consider this: Laboratory animals that are kept awake for long periods of time ...die.

VOA: special.2009.08.26

But long story short, if I want to use a function called sleep, -- the reason I, the programmer, knew to use that library -- -- that header at the top -- because it told me to in this little synopsis.

但长话短说，如果我想要用一个叫做sleep的功能，我作为程序员知道使用那个函数库-,上面的标题-,因为在这个小的大纲中它告诉我。

哈佛公开课 - 计算机科学课程节选

Her dog barks all night long and won't let me sleep.

她养的狗整夜整夜地叫唤，让我根本没法入睡。

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For the study, very short sleep patterns were defined as less than five hours a night, short sleep was five to six hours a night, standard sleep was seven to eight hours, and long sleep was nine or more hours a night.

CNN: Does your diet influence how well you sleep?

It can also tell how long you sleep each night, as well as how long it takes you to nod off.

ENGADGET: Larklife fitness tracker syncs your data over Bluetooth, knows when you're running instead of walking

According to sleep specialist Dr. Matthew Edlund, rest is as important as sleep to our long-term health.

FORBES: To Sleep Or To Rest?