这种化学污染有两个来源：直接把污水倒进河里的工厂，和把未经处理的人类垃圾倒进河里的本地社区。
This chemical pollution has two sources: the factories which dump polluted water directly into the river and the local community which dumps untreated human wastes into the river.
额，直接污染源是那些从工厂、精炼厂、污水处理厂排放出来的污染，是吗？
Well, direct ones are pollution directly from factories, refineries, waste treatment plants etc, aren't they?
额，直接污染源是那些从工厂、精炼厂、污水处理厂排放出来的污染，是吗？
Well, direct ones are pollution directly from factories, refineries, waste treatment plants etc, aren't they?
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