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楼主: qhongliang
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44005
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[消费与需求] 水的使用价值远远大于钻石的使用价值,但是为什么水的价格十分低廉,而钻石的价格都十分昂贵呢? |
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Some people think life is black, some people think it\'s white, we all know it\'s black and white.
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