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有效率的资源配置是指可以使消费者剩余和生产者剩余的总和最大化的资源配置。
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市场无法将经济物品配置给评价最高的买者，只有政府才能做到这一点。
市场均衡处穷尽了交易的好处。
The Qingming Festival, the Spring Festival, the Dragon Boat Festival and the Mid-Autumn Festival are known as the four greatest traditional Chinese festivals.
The day before Qingming Fesitval was the traditional Chinese Cold Food Day(寒食节). As time passed, the two festivals were gradually combined into one.
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