Peter dozed off while his teacher was talking.

　　老师正在讲课，彼得打起瞌睡来了。

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

　　老师：彼得！你说说，世界上什么最大？

　　Peter: Well, well....eyelids....

　　彼得: 嗯……嗯……眼皮……

　　Teacher: What？Eyelids？

　　老师：什么？眼皮？

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

　　彼得：是的，老师。因为我眼睛一闭，眼皮就把世界上所有的东西都遮住了。