Good : plant situated away from natural or manmade sources of contamination 好:厂房位置远离自然或人为的污染源。
Contamination of drinking water can occur at source , during transportation or during storage at home . the source of contamination is usually the faeces of an infected person 食水的染污可从水源运送或者在家中储存时发生,而污染的来源主要来自患者的粪便。
" as much as we love them , our pets leave a lot of manure behind them in yards and on the street and that can be a major source of contamination of groundwater . 旧金山在城市垃圾的回收利用方面一直走在世界前列,最近又打算在其市内的"狗公民"身上大做环保文章。
Home kitchens are a common source of contamination , as pathogens from uncooked eggs , meat and egetables find their way onto countertops , utensils and cleaning tools 家庭的厨房是传染的普遍来源,像没有煮熟蛋病原体、肉类和蔬菜的病原体常在背面,还有炊具和洗涤工具。
" as much as we love them , our pets leave a lot of manure behind them in yards and on the street and that can be a major source of contamination of groundwater , " brinton said 布林顿说: “尽管我们都很喜爱这些但同时也必须看到,它们会在庭院内或大街上随地便溺,那些排泄物已经成为地下水内所含污染物的一个主要来源。 ”