母鸡的腿为什么那么短?

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Son: Why are hen's legs so short?

Dad: You're a fool. If the hen's legs were too long, wouldn't they drop their eggs into pieces when laying?

儿子：为什么母鸡的腿这么短呢？

父亲：你真笨。如果母鸡的腿太长，它们下蛋的时候，鸡蛋岂不都摔碎了？