It was a quantitative target for describing of self-purification capacity of water environment of area.
它是描述一个地区水环境自净能力大小的定量指标。
The sea is great, except that it beautiful, magnificent, magnanimous, there is a self-purification function.
大海之所以伟大，除了它美丽、壮阔、坦荡外，还有一种自我净化的功能。
Eventually the Puritans went on to attempt purification of the self and society as well.
最终的清教徒接着尝试和自我净化的社会。
Eventually the Puritans went on to attempt purification of the self and society as well.
最终的清教徒接着尝试和自我净化的社会。
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