Sulphur dioxide is a pollutant and a major contributor to acid rain.
二氧化硫是一种污染物，并且是形成酸雨的主要因素。
Nitrogen dioxide is a pollutant emitted by automobiles.
二氧化氮是汽车排放的一种污染物。
But two years ago those exceptions were eliminated when the Supreme Court ruled that the EPA could indeed regulate CO2 as a pollutant under the Clean Air Act.
但是，两年前，最高法院裁定，美国环保局确实可以按照《清洁空气法》把二氧化碳作为污染物监管，从而废除了这些例外。
People, however, may differ in what they consider to be a pollutant, on the basis of their assessment of benefits and risks to their health and economic well-being.
基于环境污染对人类健康和生活所带来的利弊的不同估计，人们对同一污染源持有不同的看法。
No pollutant discharge is allowed without a pollutant discharge permit.
未取得排污许可证的，不得排放污染物。
Lead is not a necessary element to crop growth but a pollutant with accumulation problems.
重金属铅不是作物生长的必需元素，而是一种对作物有积累性危害的污染物质。
The strategy specifies the maximum concentration of a pollutant which is allowed to be emitted.
这个策略确定了一种允许排放的污染物质的最高浓度。
Until recently the filter residue of the effluent from the factories of catalysts for oil refining has been a pollutant to the environment.
炼油催化剂厂排出的污水滤渣严重污染环境。
Transferable emission permit — a pollution control policy requiring each emitter of a pollutant to possess permits for the amount of pollution it releases.
可转让许可系统——污染物控制政策要求每个污染排放源拥有污染排放许可。
People, however, may differ in what they consider to be a pollutant , on the basis of their assessment of benefits and risks to their health and economic well-being.
基于环境污染对人类健康和生活所带来的利弊的不同估计，人们对同一污染源持有不同的看法。
Nitrous oxide (N2O) is a pollutant gas which has very strong destruction influence on atmosphere environment. Coal combustion in fluidized beds is an important resource for N2O.
氧化亚氮(N2O)是一种对大气环境有很大破坏作用的污染气体，煤的流化床燃烧是其重要来源。
Where the entity, in violation of the law, discharges pollutants without a pollutant discharge permit, and is ordered to stop discharging pollutants, but it refuses to carry out;
违反法律规定，未取得排污许可证排放污染物，被责令停止排污，拒不执行的；
A pollutant such as volcanic ASH may destroy plant life, kill or starve animals, and fill up lakes and rivers which fish depend on.
象火山灰这样的污染物，可以毁坏植物，杀害动物或使其饿死，填塞鱼类赖以生存的湖泊与河流。
A pollutant such as volcanic ASH may destroy plant life, kill or starve animals, and fill up lakes and rivers which fish depend on.
象火山灰这样的污染物，可以毁坏植物，杀害动物或使其饿死，填塞鱼类赖以生存的湖泊与河流。
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