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英语翻译no one know why we sleep.but it's certain that we need t

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英语翻译
no one know why we sleep.but it's certain that we need to.people who are prevented from sleeping begin to suffer obvious
effect after a few days they think less clearly,and they fall asleep during the working hours.some may have hallucinations.
there are no rules about sleep.generally speaking ,grown-ups sleep about seven and a half hours each night and probably more
than 60 percent get between seven and eight hours.but perhaps eight percent are quite happy with 5 hours or less ,and four
percent or so find that they want ten hours more.if you feel all right,you're probably getting enough sleep.the important
thing is not to worry how much other people get-their needs may be different.exercise doesn't seem to increase the need for
sleep,office workers,for example,sleep for about as long as people doing physically active work.
children sleep more than grown-ups-perhaps fourteen to eighteen hours soon after birth going down to grown-up levels by early
teenage.sleep patterns also tend to be different in the elderly,who may sleep less at night than they did when younger.
they find sleep getting more broken,and often make it a rule to sleep during the daytime.
英语翻译no one know why we sleep.but it's certain that we need t
没有人知道为什么我们sleep.,但我们一定需要to.防止睡觉的人开始受到明显
几天后,他们认为不清,他们在工作hours.睡着可能有些幻觉.
没有规章sleep.一般说来,大人睡7个半小时每夜,可能更多
超过60%的人得到7点到8点之间hours.或许8%是非常满意少于5个小时,共四人
所以发现或百分之十小时more.他们想要的,如果你觉得还好,你很可能获得足够的睡眠.这个重要
事情并不担心别人get-their需要多少钱可以different.似乎并没有增加锻炼的需要
睡眠,办公室职员,举例来说,睡眠大约只要人们做体力活跃的工作.
孩子睡超过grown-ups-perhaps 14到18小时出生后不久就会下降到成年早期水平
teenage.睡眠模式也往往是不同的,在年老的时候,谁会在晚上睡眠不足,要比他们在年轻.
他们发现睡眠越来越坏了,并且经常成为一个惯例,白天睡觉.