From the errors of others， a wise man corrects his own.
Two Birds
Teacher： Here are two birds， one is a swallowswallow n.［鸟］燕子， 吞咽， 喉， the other is sparrowsparrow n.麻雀. Now who can tell us which is which？Student： I cannot point out but I know the answer.
Teacher： Please tell us.
Student： The swallow is beside the sparrow and the sparrow is beside the swallow.
一个聪明的人把别人的错误引以为戒，更正自己。
两只鸟
老师： 这儿有两只鸟，一只是麻雀。谁能指出哪只是燕子，哪只是麻雀？
学生：我指不出，但我知道答案。
老师：请说说看。
学生：燕子旁边的就是麻雀，麻雀旁边的就是燕子。