Correct

沉眠

/ chēn mián / 
Strokes

Example

As a Verb

be fast/sound asleep; be in heavy/deep sleep/slumber; sleep soundly/deeply

1
Chēn
沉
mián
眠
bù
不
xǐng
醒

be fast/sound asleep; be sunk in sleep; fall/sink into a heavy sleep/slumber