KTV establishments to become a serious sound pollution, the noise originated.

严重的KTV场所成为声音的污染地, 噪声的发源地.

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It is an important way with the sound - absorbing materials to improve the sound pollution.

利用吸声材料来吸声降噪是治理噪声污染的重要途径之一.

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Bicycles do not cause air or sound pollution.

自行车不造成空气或声音污染.

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There are many kinds of pollution, like sound pollution, air pollution and water pollution.

有许多种污染, 像声音污染 、 空气污染和水污染.

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