This will lessen the degree of air pollution.
这可以减轻空气污染的程度。
The quality situation and pollution degree of groundwater directly represent its environment quality.
地下水水质基本状况和污染程度直接反映地下水环境质量的好坏。
The quality situation and pollution degree of groundwater directly represent its environment quality.
地下水水质基本状况和污染程度直接反映地下水环境质量的好坏。
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