弈秋

弈秋是国中最出色的围棋高手。如果让他同时教两个人下棋，其中一个人专心致志，凝神静听弈讲解棋道，而另一个人虽然貌似在听讲，心里却想着要是有只天鹅飞来，怎样才能张弓搭箭把它射下来。

If let him teaches two students , and one listens carefully and is absorbed in ti while the other one seemingly is also listening , but in his mind , he is thinking about if a swan passes here , how to shoot it down with a bow and arrow .