It's sleeping in class

睡觉───sleep;上课───attend class;class begins

His mind was in such a turmoil that he couldn't get to sleep.───内心的纷扰使他无法入睡.

This medicine will ensure you a good night's sleep.───这药能保证你睡一夜好觉.

Hush now and try to sleep.───别出声了，睡吧。

This gas will put you to sleep during the operation.───这种气体将使你在手术中处于睡眠状态.

Since 1991, parents have been advised not to put their infants down to sleep in the prone position.───自1991年以来就一直建议父母不要让婴儿趴着睡觉。

Deep sleep came to him.───他睡得很熟.

The convertible sofa means that the apartment can sleep four.───有了这张折叠沙发,公寓里可以睡下4个人.

When I read this article, thoughts thronged my mind and I couldn't sleep.───读了这篇文章后,我浮想联翩,夜不能寐.

Now I shall go to sleep. Good night.

She had just woken from a deep sleep.

I must have dropped off to sleep .

Those who sleep with dogs will rise with fleas.

I aroused Kyle from his sleep.