pollutant /pəˈlu:tənt/ n. [c] 污染物质：environmental pollutant 环境污染物；discharge/emit/ release pollutants排放污染物 Pollutants are constantly being released into the atmosphere.污染物质正在不断地被排放到大气中去。
pollute /pəˈlu:t/ vt. 弄脏，污染：the polluted air 被污染的空气Some factories pollute our water supply.一些工厂污染了我们的水源。The river has been polluted by all kinds of industrial waste.那条河已被各种工业废物污染。
pollution /pəˈlu:ʃən/ n. ［u］污染：the pollution of the atmosphere 大气层的污染；noise pollution 噪音污染；reduce pollution of the air降低空气污染的程度
