Dreaming sleep

• 作梦睡眠

dreaming sleep的用法和样例：

例句

1. It is not clear whether cetaceans undergo dream sleep.
   鲸类动物是否经历梦睡眠还不清楚。
2. As you probably know, in sleep you constantly move between the phases of dreamless sleep and the dream state.
   大概你知道，在睡眠中，你会在无梦睡眠和梦中状态两个阶段不断地徘徊。