noxious 有害的 有毒的 poisonous toxic pollute 污染 contaminate defile pollutant 污染物質 Rivers in the neighbourhood were polluted by the chemical wastes from the factories. pollution 污染 玷污 noise pollution contaminate 污染 difile pollute The Department of Resources notified the town council that the water supply was contaminated. waste 廢物 solid waste sewage 下水道 污水 fume (濃烈難聞的)煙 氣體 habitat (動植物的)生活環(huán)境 居留地 home environment The polar region is the habitat of polar hear. balance 平衡 equelibrium I lost my balance and fell. ecosystem 生態(tài)系統(tǒng) fauna 動物群 動物區(qū)系 decibel 分貝 ozonosphere 臭氧層