fall asleep中fall是什么词?

fall asleep中fall是什么词? fall asleep的反义词是什么? fall asleep中asleep什么词性 fall asleep 可以fall sleep 请问fall asleep的反义词是什么? 1 fall asleep造句 fall asleep的同义词 fall asleep是什么意思 fall asleep in no fall back asleep asleep sleepy fall asleep feel asleep 区别 but it's difficult for them to fall asleep.的意思是什么?waiter(对应词)是什么 ,fall asleep的单独意思是什么？ fall sleep和fall asleep的区别? fall asleep中的fall在这里是什么意思 fast fall asleep/ fall fast asleep 哪个对? fall sound asleep,fall soundly asleep 哪个对啊 go to sleep 和fall asleep的区别是什么 can you fall asleep No.