1. He soon fell on sleep after a long journey.
长途旅行后他很快就入睡了。

2. The child fell on sleep in his mother's arms.
孩子在母亲怀里睡着了。

3. She fell on sleep while reading a book.
她看书时睡着了。

4. He was so tired that he fell on sleep immediately.
他太累了，立刻就睡着了。

A: When did you fall on sleep last night?
A：你昨晚什么时候睡着的？

B: I fell on sleep right after I turned off the lights.
B：我关灯后马上就睡着了。

1) 古英语或文学表达，表示入睡

2) 等同于现代英语 fall asleep

3) 描述从清醒进入睡眠状态

1. 入睡；睡着

e.g. He fell on sleep quickly.
他很快就睡着了。

verb phrase (archaic/literary)

1. To fall asleep; to enter a state of sleep.

Synonym: fall asleep