Environmental issues, such as air pollution and water pollution, directly affect people's lives.

环境问题，如空气污染和水污染，直接影响人们的生活。

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In today's world, almost everyone knows that air pollution and water pollution are harmful to people's health.

在当今世界，几乎每个人都知道空气污染和水污染对人们的健康有害。

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They keep our air clean, reduce noise pollution, improve water quality and provide food and building materials.

他们保持我们的空气清洁，减少噪音污染，改善水质，提供食品和建筑材料。

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But the F.A.O. representative in Liberia warned about spraying pesticides from airplanes because of the risk of additional water pollution.

VOA: special.2009.01.27

Water pollution and visits by careless swimmers and divers also threaten the reef.

VOA: special.2009.04.22

Someone just needs to give them a little spark." More than 50,000 children die each year in Yemen because of diseases caused by water pollution.

VOA: standard.2010.04.01

She outlined the reasons for a more cautious approach, which included the ban or moratorium placed on fracking in other countries, concerns cited by NI Water for the effect of pollution on water supply, and the dangers of well blowouts and earth tremors.

BBC: Hydraulic fracturing

What makes this prosecution particularly senseless is that the Safe Drinking Water Act was adopted to prevent the pollution of water supplies, yet the evidence at trial convincingly demonstrated (and the trial judge so held) that the water King injected into his irrigation wells contained absolutely no contaminants.

FORBES: U.S. v. King: It��s Time for Some Prosecutorial Restraint

In 1972 the Clean Water Act further broadened the law, as Congress became concerned about pollution and water quality, spurred by high-profile incidents such as the Cuyahoga River catching fire in 1969.

WSJ: Federal Offenses: Sewage Blunder Earns Building Engineer a Criminal Record