To supply the demand for the potable water for the world's population and high quality water for industry the available sources of water often need to be treated.
为了满足世界人口和高质量工业用水的要求，通常可利用的水资源都需要净化。
To supply the demand for the potable water for the world's population and high quality water for industry the available sources of water often need to be treated.
为了满足世界人口和高质量工业用水的要求，通常可利用的水资源都需要净化。
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