- 沉睡 [chén shuì]
- be sunk in sleep; be fast asleep; sleep soundly:
a deep sleep of exhaustion 因疲劳而沉睡
He would try to awake their dormant and sluggish faculties.
At the instant of the explosion, the whole city was in sound sleep.
The witch put the princess under a spell, and she fell asleep for ten years.