污水经过包气带，能有效地去除污水中的有害物质，防止地下水污染。
Through the vadose zone can effectively remove the harmful substances in waste water and prevent groundwater pollution.
污水经过包气带，能有效地去除污水中的有害物质，防止地下水污染。
Through the vadose zone can effectively remove the harmful substances in waste water and prevent groundwater pollution.
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