真题例句：
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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.
空气污染每年给全球经济造成超过5万亿美元的福利损失，其中最严重的损害发生在发展中国家。
[2018年 CET4 阅读理解]
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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. But the problem is not limited exclusively to the developing world.
在低收入和中等收入国家，大约十分之九的人生活在他们经常经历户外空气污染处于危险程度的地方。但这个问题并不仅限于发展中国家。
[2018年 CET4 阅读理解]
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Millions die early from air pollution each year.
每年有数百万人早早死于空气污染。
[2018年 CET4 阅读理解]
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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.
室内污染，包括家庭取暖和烹饪等来源，尽管该地区取得了进步，但在过去几十年中一直保持不变。
[2018年 CET4 阅读理解]
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Levels of outdoor pollution have grown rapidly along with rapid growth in industry and transportation.
随着工业和交通的快速增长，室外污染水平迅速上升。
[2018年 CET4 阅读理解]
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Maintaining safe speeds and being electric, self-driving cars would drastically reduce pollution levels and dependency on non-renewable fuels.
自动驾驶汽车在保持安全速度和电动化的前提下，将大幅降低污染水平和对不可再生燃料的依赖。
[2018年 CET4 阅读理解]
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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.
空气污染的影响在发展中国家是最严重的，在一些地方，劳动力损失收入相当于国内生产总值(GDP)的近1%。
[2018年 CET4 阅读理解]
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The figures include a number of costs associated with air pollution.
这些数字包括了与空气污染有关的一些成本。
[2018年 CET4 阅读理解]
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The report includes both indoor and outdoor air pollution.
该报告包括室内和室外空气污染。
[2018年 CET4 阅读理解]
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Conversely, "cycle to work" days have done their job by creating pollution lows.
相反，“骑车上班”可降低污染。
[2018年 CET4 阅读理解]
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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.
Aclima 的老板 Davida Herzl 表示，他们发现旧金山的运输工人罢工，城市居民被迫开汽车时，空气污染达到了高峰。
[2018年 CET4 阅读理解]
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Fresno, in the central valley, comes top of the list in America for year-round pollution.
位于中部山谷的弗雷斯诺(Fresno)在美国全年污染中名列前茅。
[2018年 CET4 阅读理解]
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Green buildings like this aren't necessarily cost-efficient for the investor, but it does produce much less pollution than that caused by energy production through fossil fuels.
对投资者来说，这样的环保建筑不一定具有成本效益，但它产生的污染远少于通过化石燃料产出能源所造成的污染。
[2018年 CET4 阅读理解]
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It has been trying out monitoring stations that are intended to yield minute-to-minute maps of outdoor air pollution.
它一直在试行监测站，以绘制出每分钟的室外空气污染图。
[2018年 CET4 阅读理解]
词典释义：
