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.

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。

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Contrary to the conventional view that human activities damage the environment, Glaser says, "Black carbon combined with human wastes is responsible for the richness of Terra Preta soils."

与人类活动破坏环境的传统观点相反，格拉泽说：“与人类排泄物结合的黑碳是黑土高地土壤肥沃的原因。”

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Environmental engineers are concerned with the disposal of human wastes.

环境工程师们关心人类排泄物的处置。

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Liberal Democrats should be at the forefront of the crusade against poverty because it wastes human potential and breeds alienation.

BBC: Jackie Ballard: Principle into power

He argues the Army's approach, leaving the majority of the piloting to the plane's automatic systems, avoids accidents and saves resources that the Air Force wastes training human pilots.

FORBES: War Without Soldiers