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Urban road traffic noise approximately composes above city region ambient noise 80%.
其中城市道路交通噪声约占城市区域环境噪声的80%以上。
youdao
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Road traffic noise has become one of the major urban pollution sources.
交通噪声已成为城市主要污染源之一。
youdao
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Road traffic noise has become one of the major urban pollution sources.
交通噪声已成为城市主要污染源之一。
youdao