Don't be selfish
　　A mother is admonishing her son.
　　"Now,John,don't be selfish.Let your little brother share the bicycle with you."
　　"But Mother,I do.I ride it down the hill,and he rides it up the hill."
别太自私
　　一位母亲在劝告她的儿子.
　　"听着,约翰,别太自私,让你的弟弟和你共用一辆自行车."
　　"妈妈,我是让他.我先骑下坡,他再骑上坡."