To perfect the worsening agricultural ecological environment must control the area pollution in agriculture.

改善日益恶化的农业生态环境，必须处理好农业面源污染问题。

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In the model the contribution from area pollution sources was calculated by transforming it to the background concentration, so the model was greatly simplified.

在模型中尝试性地将面源污染产生的浓度贡献转化到背景值中计算，简化了解析模型。

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The catchment treatment in Taohuadao's demonstration area pollution prevention project is to purify rain and road drainage collected by resource treatment system.

汉阳地区桃花岛示范工程的汇处理系统是为了净化源处理系统所收集的雨水和道路排水。

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he observes,pointing to the very substantial cuts in air pollution emissions during the 2008 summer Olympics in the Beijing metropolitan area.

VOA: standard.2010.04.07

The bay provides a sheltered area where pollution could be minimised, but Devon County Council says the current set up is too risky.

BBC: NEWS | UK | England | Devon | 'Positive' meeting over oil spill plans

They report that children with autism were more likely to have lived in an area with higher pollution values.

FORBES: 5 Caveats About The Autism And Air Pollution Study

One forest fire near Denver last summer dumped tons of mud and soot into the city's largest reservoir for drinking water and created the worst air pollution in the area's history.

FORBES: Fact and Comment