A: Well, no one could survive without water, but you see pollution has been making more and more water unable for drinking.
A：如果没有⽔谁也活不了，但是你看，污染正使越来越多的⽔没办法供⼈饮⽤。
B: Yeah. Water pollution has for a long time been a major concern among the environmental issues.
B：是啊，长期以来⽔污染⼀直都是环境问题中备受关注的。
A: But what are the sources of water pollution?
A：但是都有哪些污染源呢？
B: They could generally be divided into two categories: direct and indirect contaminant sources.
B：可以分为两⼤类，即直接污染和间接污染。
A: Well, direct ones are the pollution directly from factories, refineries waste treatment plants etc., aren’t they?
A：嗯，直接污染是指⼯⼚、冶炼⼚、废⽔处理⼚等地⽅直接排出来的废物，是吧？
water pollutionB: Yeah. They are emitted directly into urban water supplies.
B：对，它们不经处理就直接排到城市居民的饮⽤⽔源⾥了。
A: But what about the indirect ones?
A：那间接污染是什么呢？
B: Indirect sources include contaminants that enter the water supply from soils or groundwater systems and from the atmosphere via rainwater.
B：间接污染是从泥⼟、地下⽔系统以及通过⾬⽔从⼤⽓中进⼊⽔源的有害物。
A: I see. For the sake of us all, we should be an active participator in the prevention of it.
A：我知道了，为了我们⾃⾝的利益，我们⼤家都应该积极参与到防⽌污染的活动中去。
B: Sure. It's an issue asking for everyone's participation.
B：就是，这是个⼈⼈都应该参与的事情。
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