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。
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。
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.
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