I'd had three hours sleep the night before, and not much more the nights before that too.
昨天晚上我只睡了三个小时，再之前的几个晚上，我也没睡多长时间。
Children who get less than nine hours sleep a night struggle at school, research has shown.
研究发现，睡眠时间少于九小时的孩子在校表现差。
Humans Need eight Hours sleep a Night: There are many ways of sleeping and few cultures sleep in eight-hour consolidated blocks like we do.
人每天晚上需要八小时的睡眠：我们有很多种睡眠方式和少数几种睡眠文化传统，就像大多数人每天要连续的睡八小时。
Scientists have found that you can double your chances of reaching your target weight if you get between six and eight hours sleep a night.
科学家们发现，如果你每天睡6到8个小时，你达到目标体重的机会就会加倍。
They were also twice as likely to be successful as participants who reported the highest stress levels and got six or less hours sleep a night.
同样也有人称跟一些参与者一样，承受着巨大的压力，每晚睡6或少于6小时，也有两倍的减肥成功机会。
For two nights before the start of the experiment, all participants were allowed 10 hours in bed during which they got an average of 8.47 hours sleep.
在实验开始前的两个晚上，规定志愿者们睡满10小时。期间，他们的平均睡眠时间为8.47小时。
"People should get as many hours sleep as they need to feel rested," Kripke says, adding that there's no proof that shortening sleep will lengthen life.
“人们应该睡足他们需要休息的时间，”克里普卡说。他还补充说，没有证据证明缩短睡眠时间能够延长寿命。
When you're pushed for time, something has to give, be it your raging social life, your time on the couch with the TV blaring or eight solid hours sleep a night.
当你的时间很紧张时，有些东西不得不放弃，无论是窝在沙发上看着电视还是8个小时的固定睡眠，就让这成为你激烈的社会生活吧。
Dr Ian Maconochie, from the Royal College of Paediatrics and Child Health said: "Children under five generally average at least 11 hours sleep at night and in daytime naps."
皇家学院的小儿保健科医生伊恩·穆肯奥克说：“5岁以下的儿童夜晚加上白天小睡平均下来要达到11小时以上”。
However, the new drug, Xyrem puts Claire into a deep sleep for three-and-a-half hours so she must take a second dose in the middle of the night to get a full seven hours sleep.
然而，新型药物“Xyrem”可以让克莱尔处于深度睡眠，连续睡上三个半小时，所以在半夜她要再吃上一次药，保证自己可以有7个小时的深度睡眠。
Dr Stanley says having a nap during the day should not be used to replace sleep at night, but other researchers suggest that it could do you as much good as seven hours sleep at night.
Stanley博士说白天的打盹儿并不能代替晚上的睡眠，但其他的研究者称打盹儿是很有好处的，可媲美于晚上的7小时睡眠。
Full-time working mothers were suffering the most with 59 percent saying they were not getting enough sleep.Half of the working mothers said they were getting six or fewer hours sleep a night.
这种现象在上班妈妈中尤为严重，其中，59%的妈妈说她们睡眠不足，有一半的上班妈妈每天最多只能睡6个小时。
Full-time working mothers were suffering the most with 59 percent saying they were not getting enough sleep. Half of the working mothers said they were getting six or fewer hours sleep a night.
这种现象在上班妈妈中尤为严重，其中，59%的妈妈说她们睡眠不足，有一半的上班妈妈每天最多只能睡6个小时。
An elderly person may nap during the day and then sleep only five hours a night.
上了年纪的人白天会小睡一会儿，然后晚上只睡5个小时。
After three weeks, they gradually reduced their sleep to about eight hours. But another interesting thing happened.
3周后，他们把睡眠时间逐渐缩短到8小时。但是另一件有趣的事发生了。
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。
Not only did I get my full eight hours of sleep, but an additional two more hours as well.
我不仅睡足了8小时，还多睡了两个小时。
In our society, you're considered dynamic if you say you only need 5.5 hours' sleep.
在我们的社会，如果你说你只需要5个半小时的睡眠，人们就会认为你很有活力。
Middle school students should have at least 8 hours' sleep every day.
中学生每天至少应该保证8小时的睡眠时间。
Most adults need seven to nine hours' sleep while teens need even more.
大多数成年人需要7到9小时的睡眠，而青少年所需时间更长。
Over 40% of the Junior 3 have less than eight hours' sleep each night because of study.
超过40%的初三学生因为学习，每晚的睡眠时间不足8小时。
Children need 10-12 hours of sleep a day.
儿童每天需要10-12个小时的睡眠。
Most students have less than 8 hours of sleep every night.
大多数学生每晚睡眠不足8小时。
He's exercising, and he's getting eight hours of sleep every night.
他一直有锻炼，每天晚上都能睡八个小时。
Eight hours of sleep a night is necessary for all of us.
每晚八小时的睡眠对我们所有人都是必要的。
Grown-ups usually need 6-8 hours of sleep to keep active.
成年人通常需要6-8小时的睡眠来保持活力。
In general, babies need fifteen to sixteen hours of sleep a day.
一般来说，婴儿每天需要15到16个小时的睡眠。
The hours of sleep before midnight are thought to be the most helpful.
午夜前的睡眠时间被认为是最有帮助的。
How many hours do you sleep every night?
你每天晚上睡几个小时？
How many hours do you sleep every night?
你每天晚上睡几个小时？
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