rapid-eye-movement sleep

例句：

1. 1. During REM sleep, dreams occur.
   在快速眼动睡眠期间，做梦。
2. 2. Rapid eye movement sleep is essential for the body's recovery.
   快速眼动睡眠对于身体的恢复至关重要。
3. 3.The patient was in a deep state of REM sleep when he woke up.
   病人在深度的快速眼动睡眠状态中醒来。