雅思分类词汇整理：污染

　　污染

　　1. contaminate 污染 The department of Resources notified the town council that the water supply was contaminated.

　　2. pollute 污染 Rivers in the neighborhood were polluted by the chemical wastes from the factories.

　　3. taint 感染 The meat was tainted.

　　4. purify 使纯净 This salt has been purified for use in medicine.

　　5. pollutant 污染物质

　　6. ecosystem 生态系统

　　7. noxious 有害的 The room is full of noxious fumes.

　　8. toxic 有毒的

　　9. lethal 致命的

　　10. venomous 有毒的 分泌毒液的 The government announced that fruits produced in the region was contaminated and thus all the fruits become venomous.

　　11. deteriorate 使恶化 The water in the catchment has deteriorated in the last month.

　　12. pernicious 有害的

　　13. decibel 分贝

　　14. hazardous 危险地

　　15. effluent 流出物 Dangerous effluent from some chemical plants is being poured into the river through the town.

　　16. emission 散发

　　17. inorganic 无生物的

　　18. litter 垃圾

　　19. nuisance 令人讨厌的东西

　　20. radioactive 放射性的

　　21. sewage 下水道

　　22. conservation 保护 There is a need for the conservation of trees， or there will soon be no forests.

　　23. renewable 能再生的 We could better protect our environment through discovering and using renewable energy.