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.
根据污染现状，进行了抚顺市环境噪声污染特征和污染来源分析，得出抚顺市主要污染源为交通噪声和社会生活噪声。
The paper analyzed the characteristic and sources of noise by the present pollution, and then came the conclusion that the main pollution sources of noise were traffic noise and society noise.
交通噪声已成为城市主要污染源之一。
Road traffic noise has become one of the major urban pollution sources.
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