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鸡蛋是我们餐桌上的常见食品,而且在超市上架的鸡蛋往往干净透亮,颜色饱满。但是,这枚从鸡的“泄殖腔”中诞生的产物为什么能够如此洁净地出现在超市里,人们对于鸡蛋的挑选又有什么标准和要求?听完节目就知道!
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