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1·He fell into a deep dreamless sleep.

他酣然入睡，一夜无梦。《柯林斯英汉双解大词典》

2·On this occasion, he had fallen at once into a dreamless sleep.

这一次，他立刻进入了无梦的睡眠。

3·It is dark like a sleep that is dreamless.

它沉黑得像无梦的睡眠。

4·May you rest in a deep and dreamless slumber.

愿你陷入一夜无梦的沉睡。

5·I can picture being in dreamless sleep quite easily.

我能够轻而易举地想象无梦的睡眠。

6·Sleeping at last in a dreamless sleep locked fast.

终于在无梦的睡眠中睡得香。

7·There is nothing that it's like to be in dreamless sleep.

没有感觉可以形容无梦的睡眠。

8·He fell into the dreamless sleep which rounded off his past.

他睡着了，睡得非常沉，好象把过去的岁月全。

9·Of course you believe that at times you're in dreamless sleep.

你当然是相信有时你能进入无梦睡眠的。

10·It increased the amount of time spent in a dreamless stage called N2.

摇晃增长延长了处于N2，即睡眠中无梦阶段的时间。

无梦的

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。