The pollutants derive from a wealth of sources, including agriculture, factory discharges, consumer products, urban runoff and wastewater treatment plants.
污染物质的来源广泛,包括农业、工厂排放物、消费产品、城市河道和污水处理工厂。
The pollutants derive from a wealth of sources, including agriculture, factory discharges, consumer products, urban runoff and wastewater treatment plants.
污染物质的来源广泛,包括农业、工厂排放物、消费产品、城市河道和污水处理工厂。
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