As we fall asleep the amplitude of brain waves slowly becomes greater.进入睡眠状态时，我们的脑电波振幅慢慢变大。After changing the bed, I would fall asleep quickly.换了床单，我很快就能睡着。He was wont to fall asleep after supper.他老是吃完晚饭就打盹。...

fall asleep的音标：fall asleep的英式发音音标为：[fɔ:l ə'sli:p]fall asleep的美式发音音标为：[fɔl ə'slip]...

v.入睡，睡着...