Correct

入睡

/ rùshuì /
Strokes

Definition

to fall asleep

Example

As a Verb

fall asleep; fall/sink into sleep; go to sleep

1
tài
lèi
le
  
,
tǎng
xià
jiù
shuì
入睡
le
  

She immediately fell into sleep because she was tired.

2
Zuówǎn
昨晚
zàoyīn
噪音
tài
  
,
nán
难以
shuì
入睡
  

I couldn't sleep last night because of the noise.