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你这个问题,在养殖业有类似的例子:鱼塘里要把长大了的鱼统统捞掉,因为这些鱼吃的多,不长肉,浪费资源。B-)
bingle
(bingle)
(#191556@0)
Last Updated: 2001-9-6
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替我4岁小儿请教个问题:为什么小孩吃饭能长大,大人吃饭不再长大了呢?
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