We put different kinds of dirt on our hands and washed them with water. It turned out that 95percent of water is used to flush away the dirt; only 5 percent is used to dissolve it.

李启章解释道：“我们用水来冲洗手上的各种污渍，发现95%的水都用于冲走污渍，只有5%的水用于溶解污渍。

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Having shovels in many different dirt-piles is meant to provide mining giants with insurance in a cyclical industry: not all commodities will plummet and peak at the same time, according to the theory.

ECONOMIST: An acquisition in aluminium