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Cairo is known for its overcrowded roads, irregular driving practices and shaky old vehicles, but also for its air pollution.
出自-2015年12月听力原文
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air pollution costs the global economy more than $5 trillion annually in welfare costs, with the most serious damage occurring in the developing world.
2018年12月四级真题（第一套）阅读 Section A
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All of which, combined with California's reputation as the home of technological innovation, makes the place ideal for developing and testing systems designed to monitor pollution in detail.
2018年6月四级真题（第二套）阅读 Section A
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Around 9 in 10 people in low- and middle-income countries live in places where they regularly experience dangerous levels of outdoor air pollution.
2018年12月四级真题（第一套）阅读 Section A
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Davida Herzl, Aclima's boss, says they have revealed pollution highs on days when San Francisco's transit workers went on strike and the city's inhabitants were forced to use their cars.
2018年6月四级真题（第二套）阅读 Section A
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Indoor pollution, which includes sources like home heating and cooking, has remained constant over the past several decades despite advances in the area.
2018年12月四级真题（第一套）阅读 Section A
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It has been trying out monitoring stations that are intended to yield minute-to-minute maps of outdoor air pollution.
2018年6月四级真题（第二套）阅读 Section A
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Levels of outdoor pollution have grown rapidly along with rapid growth in industry and transportation.
2018年12月四级真题（第一套）阅读 Section A
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Maintaining safe speeds and being electric, self-driving cars would drastically reduce pollution levels and dependency on non-renewable fuels.
2018年12月四级真题（第三套）阅读 Section C
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millions die early from air pollution each year.
2018年12月四级真题（第一套）阅读 Section A
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The aircraft cost 25 million pounds and can carry heavier loads than huge jet planes while also producing less noise and emitting less pollution.
2018年6月四级真题（第二套）听力 Section A
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The effects of air pollution are worst in the developing world, where in some places lost-labor income equals-nearly 1% of GDP.
2018年12月四级真题（第一套）阅读 Section A
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The figures include a number of costs associated with air pollution.
2018年12月四级真题（第一套）阅读 Section A
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The report includes both indoor and outdoor air pollution.
2018年12月四级真题（第一套）阅读 Section A