The paper analyses the diffusion conditions of air boundary layers, the distribution and forecast of source air pollution and the current situation of air pollution.

分析了大气边界层扩散条件、大气污染源分布及预测、大气污染现状。

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Wind is a clean source of renewable energy that produces no air or water pollution.

风是一种清洁的可再生能源，不产生空气和水污染。

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A examination of the picture immediately reveals that the source of its mood is the air pollution resulting from a huge number of automobiles spread around its surface.

仔细观察这幅图就会发现其郁闷来自于空气污染，这是由于其表面上有着无数车辆在行驶。

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This will allow truckers to reduce emissions significantly (diesel emissions include nitrous oxides, particulate matter, and other air toxics and they are a major source of pollution in some areas).

FORBES: Acceleration of the Natural Gas Highway

Janice Nolen, national policy adviser at the American Lung Association, says that rather than dealing with the harmful effects of air pollution, the focus should be on tackling the problem at source.

CNN: Smog-eating tiles gobble up air pollution