A substantial number of innocent people are suffering from various kinds of incurable diseases due to water and air pollution.

由于水和空气污染，很多无辜人民患上各种不治之症。

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Environmental regulations in the United States and actions by the European Commission have led to substantial progress in reducing fine particulate pollution since 1990, the report said.

报告说，自1990年以来，美国的环境法规和欧盟委员会的行动在减少细颗粒污染方面取得了重大进展。

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The continuously growing demand for products result in enormous energy consumption as well as a substantial increase in waste and pollution.

因为产品的过度消费，很普遍，采取一些措施去减少污染是很重要的。

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"At a per-passenger-mile basis, rail is about three times as efficient as travel by car, in terms of fuel efficiency, and six times as efficient as travel by air, so there are pretty substantial pollution reduction benefits both in terms of greenhouse gases and other pollutants."

VOA: standard.2010.02.15

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

However in the case of Neal Soil Suppliers - where dairy and food effluent was spread over a field - there had been "substantial and serious pollution".

BBC: Gwent Levels waste dumping: David John Neal pleads guilty

"With proper regulation and enforcement, gas provides a very substantial health benefit in reducing air pollution, " compared with coal-fired power plants, said Daniel Schrag, director of Harvard University's Center for the Environment.

WSJ: Celebrity 'fractivists': True advocates or NIMBYs?

Despite measures to cut lead pollution, most adults have substantial levels in their bodies.

BBC: NEWS | Health | Lead exposure link to cataracts