1.
Dreamless sleep is much shallower, and we have all witnessed cats or dogs cocking their ears to a sound when apparently fast asleep.
无梦睡眠则要浅得多。 我们都看到过猫和狗在显然的酣睡中，有一点响动耳朵就会竖起来。
2.
awakened from a dreamless sleep,
从无梦的睡眠中醒来，
3.
Dreams have close ties with sleep.
梦与睡眠紧密相关。
4.
a recurring sleep state during which dreaming occurs; a state of Rapid Eye Movements during sleep.
反复做梦的睡眠状态；睡眠期间眼睛快速转动。
5.
Sleep interrupts wakefulness,and sleep itself is interrupted by dreams and nightmares.
睡眠中断清醒，而睡眠本身又被美梦和噩梦所搅扰。
6.
There are no rules about sleep.
睡眠并无规则可循。
7.
in the nothingness of sleep
在睡眠的无知觉状态中
8.
It is not clear whether cetaceans undergo dream sleep.
鲸类动物是否经历梦睡眠还不清楚。
9.
The subconscious is one"s dreamtime reality while asleep.
潜意识是你在睡眠时的梦想时间实相。
10.
Hamlet: … to die-to sleep -/To sleep!
哈姆雷特：……死，就是睡眠；／睡眠，也许要做梦，这就麻烦了！
11.
But, deep dreamless sleep would take you down to the lowest frequency, typically 2 to 3 cycles a second.
但是无梦的深层睡眠将使你的脑电波频率降到最低，通常情况下为每秒2－3周。
12.
The passive sleep gives our body the rest that's needed and prepares us for active sleep, in which dreaming occurs.
消极的睡眠让我们的身体得到休息，是积极睡眠的需要和准备。积极睡眠中会做梦。
13.
A sleep diary compiled over several nights may help identify unusual sleep patterns and sleep disorders (eg, sleepwalking, night terrors).
几个晚上的睡眠日记可以帮助确认异常睡眠形态和睡眠障碍（梦游、夜惊等）。
14.
People dream during 25 percent of sleep time.
人的睡眠时间的百分之二十五都用在了做梦上。
15.
We most need this dreaming sleep before we are born.
我们最需要这种做梦睡眠的时期是在出生前。
16.
Raymond fall into an unquiet slumber, and dream again of his son.
雷蒙德进入了不安宁的睡眠，又梦见了他的儿子。
17.
A somnambulist can happily combine sleep and exercise.
梦游者能把睡眠和运动巧妙地结合在一起。
18.
It refers to inquiring about insomnia, dreaminess and lethargy to know excess and deficiency of yin and yang.
指的是询问失眠、梦和昏睡以了解阴阳的虚实。