And then thirdly, water to be treated as an economic good.

然后第三, 要把水当成经济商品来看待.

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We can only produce limited maximum amounts of each economic good.

我们只能有限度地、最大量地生产每一种经济物品.

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And then thirdly , water needs to be treated as an economic good.

第三个原则是我们应该把水视作是经济商品.

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An economic good is a good whose quantity available is insufficient to satisfy all our wants.

经济物品是指数量不足以满足所有人欲望的物品.

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