1.
completely free from dirt or contamination.
完全没有污垢和污染物。
2.
not spreading pollution or contamination; especially radioactive contamination.
不会散布污染或者污染物；特别是放射性污染物。
3.
(2) "Pollutant" means a substance that is capable of causing water pollution.
(二)“污染物”是指能导致水污染的物质。
4.
chemical residue and contaminant
化学物质残滓及污染物
5.
fission product contaminants
裂变产物裂变污染物
6.
Food Contamination Status of Nanjing City in 2006-2008
2006-2008南京市食品污染物污染状况分析
7.
Heilongjiang Province Site Pollution Source Survey and Estimation
黑龙江省面污染源调查与污染物估算
8.
petrol engine exhaust emissions
汽油发动机废气污染物
9.
spill cleanup activities
溢漏污染物的清除活动
10.
long-range transport of atmospheric pollutants
大气污染物的长程飘移
11.
transport (of a pollutant) in soil
污染物在土壤中的迁移
12.
Management of Cleaning Pollutants from Ships
船舶污染物清除管理
13.
surface contaminant detector
表面污染物质检测仪
14.
et removal rate
雨水清除污染物速率
15.
interaction of atmospheric pollutants
大气污染物的相互作用
16.
contaminated with infecting organisms.
被传染性微生物污染的。
17.
contaminated clothing,eg by radio-active material
受污染的衣物（如受放射性物质污染）
18.
Something that pollutes, especially a waste material that contaminates air, soil, or water.
污染性物质造成污染的物质，尤其指一种污染空气、土壤或水的废物