A heavy meal at night causes tossing and turning and a prolonged emotional stress while at sleep.

晚上吃得很多会让你睡觉时辗转反侧并增加情绪上的压力。

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This study looked at sleep that was fragmented, but not shorter or less intense than normal for the mice.

而此次研究观察的是断断续续的，但是不比正常睡眠时间短或强度弱的睡眠。

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In a follow-up study with the virtual-skiing game Alpine Racer, 14 of 16 students reported seeing skiing images at sleep onset (as did three people who were merely observing the experiment.)

在一项用虚拟滑雪游戏《高山滑雪》(Alpine Racer)进行的后续研究中，16名学生中的14名报告说，他们在刚开始入睡时见到了滑雪的图像(3位只是观察了这个实验的人也是如此)。

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Yet sleep scientist Ying-Hui Fu at the University of California, San Francisco,says little is known about the basic need for sleep.

VOA: special.2009.08.26

A related view is that sleep emerged to preserve energy and keep you out of trouble at night.

相似地，睡眠是为了保存能量,还能让你晚上不去惹麻烦。

耶鲁公开课 - 心理学导论课程节选

I think for the past three months, I've only had five or six hours of sleep at night.

我觉得在过去三个月里，每晚我就睡5到6个小时。

I need 实战 - SpeakingMax英语口语达人

Some of us parents have children who at this very moment may be homesick at sleep-away camp.

CNN: Independence day: For our children it can be summer camp

Thirty percent of the teens had strong symptoms of depression, while an additional 32 percent had some depression symptoms, according to the study, which was presented today in San Antonio at SLEEP 2010, an annual meeting of sleep researchers.

CNN: Sleep deprivation linked to depression in teens

But the new arena, which will be run by Ballmer and Hansen, will add tens of millions of dollars a year from premium seating, sponsorship and non-NBA events that the Kings currently do not get at Sleep Train Arena.

FORBES: Sacramento Kings Sold For $525 Million