Definition: the resting state in which the body is not active and the mind is unconscious Level: B1
我必须睡一会儿——我累坏了。
I must get some ___sleep - I'm exhausted.
之后，我非常累，回家去睡一会儿。
After that, I was very tired and went home to get some ___sleep.
良好的睡眠对健康很重要。
A good night's ___sleep is important for health.
