In young men, "deep sleep" represents 10 to 20 per cent of total sleep.
年轻男子“熟睡”占整个睡眠的百分之十到百分之二十。
Hibernations is more than sleep. It is a very deep sleep.
冬眠不同于睡觉，它是一种更深沉的睡眠。
Because sleep 80-100 minutes, people gradually from light sleep into deep sleep.
因为入睡80- 100分钟后，人便逐渐由浅睡眠转入深睡眠。
A flower in my sleep, deep sleep to go much the same emotion of the wind and rain as sadness.
我在一朵花里沉睡，沉睡去的还有许多风一样的情愫，雨一样的忧伤。
Hibernation is more than sleep. It is a very deep sleep. The animal's.
冬眠不仅仅是睡眠，而是睡得很深。动物的。
The sleep is not the same deep, sound sleep that we are used to.
这种睡眠方式没有我们过去习惯上所说的睡眠年那么深和声音响。
Hibernation is more than sleep. It is a deep sleep.
冬眠不是一般的睡眠，而是一种沉睡。
A deep sleep fell upon me-a sleep like that of death.
我转眼睡着了——跟长眠一样沉。
Hibernation is more than sleep. It's a very deep sleep.
冬眠不仅仅是睡觉，而是一种沉睡。
Hibernation is more than sleep. It's a very deep sleep.
冬眠不仅仅是睡觉，而是一种沉睡。
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