例句：

　　He works at night and sleeps during the day. （用作動(dòng)詞）

　　他晚上干活，白天睡覺。

　　The church bells keep me from sleeping. （用作動(dòng)詞）

　　教堂的鐘聲使我不能入睡。

　　Anxiety can be caused by lack of sleep. （用作名詞）

　　睡眠不足可能導(dǎo)致焦慮。