机场不仅导致了噪声、交通堵塞、耕地流失，威胁鸟类，还是主要的污染源和温室气体排放源。
As well as the noise, traffic, loss of arable land and threat to birds, airports are a major source of pollution and greenhouse gas emissions.
额，直接污染源是那些从工厂、精炼厂、污水处理厂排放出来的污染，是吗？
Well, direct ones are pollution directly from factories, refineries, waste treatment plants etc, aren't they?
一项摧毁性的针对众议院的那个不负责任的预算法案的特别修正案将会令环保局对车辆排放的温室气体和固定污染源的监管失去权威力量。
One particularly destructive amendment to the house's irresponsible budget bill would strip the E.P.A. of its authority to regulate greenhouse gases from vehicles and stationary sources.
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