“排放物”的英语？

排气中最大量的排放物是在怠速和低速运行时产生的.The greatest amount of exhaust emissions are produced at idle and during low - speed operation.澳大利亚的野生动植物也遭受到汽车有毒排放物的侵害.The Australian wild life also suffers from the cars'toxic emissions.所有汽...