Effluents from sewage disposal plants are used in some areas both for irrigation and for the nutrients contained.

废水从污水处理植物是用在一些地区的灌溉与两种营养的火势已得到控制。

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Effluents from sewage disposal plants are used in some areas both for irrigation and for the nutrients contained.

废水从污水处理植物是用在一些地区的灌溉与两种营养的火势已得到控制。

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