Exposure to this atmospheric pollutant usually occurs in industrial situations and in the chemical industries . 对这种大气污染物的暴露，通常发生在工业区和化学工业中。
The point source data file contains data for sources emitting more than a specifilc amount of a pollutant per year . 点污染源数据文件列有每年超量排放污染物的污染源数据。
Evaluation of emissions and control equipment is for the development of new pollutant source performance standards . 对排放量和控制设备进行评价为的是制定新污染源的执行标准。
Now we must cope with a wide array of environmental pollutants including gases, particulates, sewage and et al . 现在我们必须对付很多种环境污染物，包括气体、颗粒物、阴沟污物等等。
These air pollutant effects can be distinguished from effects of smoking, occupation, age, or social class . 这些空气污染物的影响能够与吸烟的影响、职业、年龄或社会因素的影响区分开。
The four places in the automobile from which pollutants can escape are the fuel tank, carburetor, crankcase and tail pipe . 汽车内泄漏污染物的四个位置是燃油箱、化油箱、曲轴箱和尾管。
This chapter describes methods of estimating airborne pollutant concentration distributions associated with various emission sources . 本章论述几种有关各种排放源的大气污染物浓度分布的估算方法。
The relationship of changes in the central nervous system and sense organs to environmental pollutants is a vast and difficult topic . 中枢神经系统和感觉器官与环境污染物的关系，是一大而艰难的课题。
Other atmospheric pollutants such as oxidants and sulfur oxides may produce adverse cardiovascular effects, but the evidence is limited . 其他空气污染物，如氧化剂、硫氧化物可能对心血管产生有害影响，但这方面证据不多。
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。
