The database contains results of urban outdoor air pollution monitoring from almost 1100 cities in 91 countries.

这个数据库包含91个国家，几乎覆盖1100个城市的城市室外空气污染检测结果。

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For protecting air quality, air pollution monitoring is a foundation work, and it gradually displays its importance.

作为大气保护基础工作的大气环境监测也越来越显示出其重要性。

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A special form of air pollution called fumigation with mountain-valley wind shift is first distinguished based on air pollution monitoring data in Dukou city.

根据渡口市空气污染监测资料首次鉴别出一种特殊形式的空气污染过程——山谷风转换期的漫烟过程。

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Marathon organisers are also monitoring the air pollution levels in London for any change caused by the volcanic eruption in Iceland.

BBC: Britain's Mara Yamauchi arrives in London for Marathon

Environmental health officers from Blaenau Gwent council told the meeting that monitoring suggested air pollution was not at a critical level, but this would continue.

BBC: Anger as waste fire in Nantyglo burns for 10 days

Eight thousand people a day die from air pollution but some simple preventative steps and increased monitoring could lessen the toll, according to a recently released report by Australia's Commonwealth Science Council.

CNN: Air pollution kills, but deaths can be prevented