Peter dozed off while his teacher was talking.

Teacher: Peter! Tell us, what's the biggest in the world?

Peter: Well, well.... eyelids....

Teacher: What? Eyelids?

Peter: Yes, sir. Because as soon as I shut my eyes, the eyelids cover everything of the world.

老师正在讲课，彼得打起瞌睡来了。

老师：彼得!你说说，世界上什么最大?

彼得：这，这。。。。。眼皮。。。。。

老师：什么?眼皮?

彼得：是这样，老师，因为我眼睛一闭，眼皮就把世界上的一切东西都遮住了。