一个村镇里,有这么三个商人,一个叫白胡子,一个叫没胡子,一个叫秃头。他们合伙做买卖,并雇了一个名叫阿里的穷人给他们看守仓库。没想到,仓库里老鼠成灾,把许多货物都咬坏了。商人们吩咐阿里买一只猫来。阿里说:“我家有一只猫,很能捉老鼠,可以卖给你们。”商人们问:“你想要多少钱?”阿里说:“很便宜,每条腿要一个银币。”这时,最吝啬、最狡猾的白胡子商人问:“你的猫是四条腿吧?我们只买三条腿。顶用的猫有三条腿就能够捉到老鼠。你把猫拿来吧!”阿里问道:“那第四条腿是属于我的,对吗?” In a village, there are three such businessmen, one is white beard, one is called a beard, one is bald. They partnered to buy and sell and hired a poor man, Ali, to keep their warehouses. Unexpectedly, the rats in the warehouse were disastrous and many goods were bitten. The merchants commanded Ali to buy a cat. Ali said: “My family has a cat, it can catch mice, you can sell to.” “Business people asked: ” How much do you want? “Ali said: ” Very cheap, each leg to a silver coin “At this time, the most parsimonious, the most cunning white-bearded businessman asks:” Your cat is four legs? We only buy three legs. The top cat has three legs to catch the mouse. Come on! “Ali asked:” The fourth leg is mine, right? "