Rising high through the polluted air of Guangzhou City in southern China is a 71-storey tower block which, according to its designers, will be the most energy-efficient in the world.

穿过广州污浊的空气,高耸入云的是这个71层高的大楼, 据其设计者称，将是世界上最节能最绿色的大楼。

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The heaviest, which shocked the world, was in 19 because of cold weather and windless conditions, polluted air covered the city.

最严重的是在19年，因为寒冷的天气和无风的条件，污染的空气覆盖了城市，这震惊了整个世界。

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The polluted air becomes poisonous to health, so it is the high time that we took actions to protect the environment.

被污染的空气有害健康，所以我们是时候采取行动保护环境了。

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Senator Nelson knew there was growing public concern about the country's polluted air, rivers and land.

VOA: special.2010.04.21

The long term effects of breathing polluted air are even more alarming.

VOA: standard.2010.08.04

"Traditional environmental risks are those that face largely the poor in China, risks like drinking water contaminated with infectious organisms or highly polluted indoor air from people burning wood or other dirty fuels inside homes without chimneys."

VOA: standard.2010.04.07

If there was why is the air so polluted in Los Angeles?

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The air is polluted by the remaining heavy industry.

ECONOMIST: Get ready for an enormous show of triumphalism

The problems of putrid water and polluted air are largely but not inevitably the result of rapid industrialisation and urbanisation.

ECONOMIST: Development and the environment