"Anytime anyone is sleeping outside, particularly in West Africa which is very well known for its malaria, you are clearly exposing yourself to that disease and other diseases,".

VOA: standard.2009.09.08

I'm afraid that you are sleeping, continue working hard.

我担心你睡着了，要继续努力学习哦！

I'm afraid of 课堂 - SpeakingMax英语口语达人

They're sort of bad things that could happen to you One particularly trendy sleep disorder that's been discovered recently are side effects of sleeping pills such as Ambien.

这时你睡觉时会遇到的,其中一个现在很多人研究的睡眠障碍是,最近发现的,服用安必恩这样的安眠药有什么副作用。

耶鲁公开课 - 心理学导论课程节选