作业帮英语翻译No one knows why we sleep,but it’s certain that we need
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/11 17:46:17
英语翻译
No one knows why we sleep,but it’s certain that we need to.People who are prevented from sleeping begin to suffer obvious effects after a few days—they think less clearly,and they fall asleep during the working hours.
There are no rules about sleep.Generally speaking,grown-ups sleep about 7 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 or 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 14 to 18 hours soon after birth,going down to grown-up levels by early teenage (青少年).Sleep patterns also tend (倾向) to be different in the old people,who may sleep less at night than they did when younger,find sleep getting more broken,and often make it a rule to sleep during the daytime.
No one knows why we sleep,but it’s certain that we need to.People who are prevented from sleeping begin to suffer obvious effects after a few days—they think less clearly,and they fall asleep during the working hours.
There are no rules about sleep.Generally speaking,grown-ups sleep about 7 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 or 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 14 to 18 hours soon after birth,going down to grown-up levels by early teenage (青少年).Sleep patterns also tend (倾向) to be different in the old people,who may sleep less at night than they did when younger,find sleep getting more broken,and often make it a rule to sleep during the daytime.
没人知道我们为什么要睡觉,但是毋庸置疑,我们需要睡眠.不睡觉的人几天之后就开始出现不良反应----比如思维不清晰,而且在上班时间经常打瞌睡.
关于睡眠是没有规则可言的.一般来说,成人夜里通常睡7.5个小时,大概超过60%的人睡7到8个小时.但是也有8%的人睡5个小时或者更少就够了,大约4%的人发现自己需要睡10个小时有时更多.如果你感觉良好,那可能是因为你睡眠足够.完全不用去在意别人要睡多久----各人需求不尽相同.运动量并不能增加对睡眠的需求,比如说上班族,他们睡的时间和从事体力的人员差不多.
儿童的睡眠时间比成人要多----出生后那段时间大概要睡14至18个小时,（这种状况）一直延续到成年水平的青少年（时期）.老年人的睡眠方式又有所不同,他们可能比年轻的时候睡得还要少,因为容易时醒时睡,所以习惯在白天的时候睡.
关于睡眠是没有规则可言的.一般来说,成人夜里通常睡7.5个小时,大概超过60%的人睡7到8个小时.但是也有8%的人睡5个小时或者更少就够了,大约4%的人发现自己需要睡10个小时有时更多.如果你感觉良好,那可能是因为你睡眠足够.完全不用去在意别人要睡多久----各人需求不尽相同.运动量并不能增加对睡眠的需求,比如说上班族,他们睡的时间和从事体力的人员差不多.
儿童的睡眠时间比成人要多----出生后那段时间大概要睡14至18个小时,（这种状况）一直延续到成年水平的青少年（时期）.老年人的睡眠方式又有所不同,他们可能比年轻的时候睡得还要少,因为容易时醒时睡,所以习惯在白天的时候睡.
No one knows why we sleep,but it iscertain that we need to.P
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