In the long run, commodity prices are governed but by one law, the economic law of demand and supply.

从长远来看，决定商品价格的只有一条法则，供与求的经济法则。

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Therefore, the principles have to be obeyed are as follows: law of value, law of demand and supply, overall planning principle, water saving promotion, and operation step by step.

为此，要遵循价值规律原则、供求规律原则、统筹安排原则、促进节约用水原则和逐步到位原则。

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As much as commodities have become a hedge against monetary genies escaping from the bottle, the law of supply and demand eventually trumps all.

诸多的商品已是套期保值，瓶中的货币精灵已无从逃脱。供求规律最终是战胜一切的不二法则。

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However, just thinking of economics 101, the law of supply and demand implies that if less of something is available there is a good chance the price of what on the market will increase.

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Going back to the simple Law of Supply and Demand, our only solution is to increase the supply of clean water available in these communities.

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And you know the law of supply and demand already.

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