As urban areas continue to expand, there human inhabitants spread all sorts of pollution: air pollution, light pollution, even noise pollution.

随着城市地区的不断扩张，各种污染也随着定居下来的人类不断的扩散：空气污染，光污染，甚至是噪音污染。

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As urban areas continue to expand, their human inhabitants spread all sorts of pollution: air pollution, light pollution, even noise pollution.

随着城市面积的逐渐扩大，人类活动带来了各种污染：空气污染、光污染，还有噪声污染。

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