The leading source of mercury is pollution from coal-burning power plants, which accounts for 40% of all domestic anthropogenic mercury, according to the EPA.
据环保局统计，汞的主要来源是占国内人为排汞量40%的燃煤电厂污染物。
Most cities are anthropogenic sources of heat and pollution.
大多数城市都是人为的热和污染的源。
Most cities are anthropogenic sources of heat and pollution.
大多数城市都是人为的热和污染的源。
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