15年每周经济学人报刊中英文对照讲课讲稿

15年每周经济学人报刊中英文对照

空气污染英国需要采取更多措施来净化污浊的空气 Air pollution空气污染The big smoke雾都

Britain needs to do more to clean up its dirty air 英国需要采取更多措施来净化污浊的空气VISITING Oxford Street, a road teeming with tatty shops and overcrowded with people, is plainly a trial. Less plainly, levels of nitrogen dioxide (NO2), a noxious gas, have been found to be around three times higher there than the legal limit. In 2013 the annual mean concentration of NO2 on the street was one of the highest levels found anywhere in Europe.

来到牛津街，你会看到街道两边布满了各式杂乱的商店，而道路上人满为患。行走在这条街上，很明显是个磨练。不为人觉察的是，这里有毒气体二氧化氮(NO2)测出含量超出法定水平的约三倍以上。２０１３年，这条街的NO2年均浓度是欧洲最高之一。

British air is far cleaner than it was a few decades ago. Fewer people use

coal-burning stoves; old industrial plants have been decommissioned. But since 2009 levels of nitrogen oxides and particulate matter, coarse or fine particles that are linked to lung cancer and asthma, have fallen more slowly. The exact number of deaths caused by dirty air is unknown. But in 2010 a government advisory group estimated that removing man-made fine particulate matter from the atmosphere would increase life expectancy for those born in 2008 by an average of six months.

英国的空气比几十年前干净多了。使用燃煤炉灶的人越来越少；老工业厂已经停产。但自2009年起，氧

化氮、微粒物质、以及与肺癌和哮喘相关的粗、细颗粒含量的下降速度减慢了。因污浊空气所引发的死亡人数是未知的。但2010年，一个政府顾问组估算如果将大气中人为造成的微粒物质除去的话，2008年的出生人口人均寿命将增加六个月。

Much of the slowdown is the result of fumes from diesel cars, which were championed by successive governments because they use less fuel and thus produce less carbon dioxide than petrol cars. In 2001 only 14% of all cars ran on diesel; by 2013 the proportion had increased to 35%. (Greener “hybrid” and electric cars have increased ninefold since 2006, but account for just 0.5% of the entire fleet.) Second-hand cars are particularly noxious, but even newer ones have not been as clean as hoped. Many cars that belched out few pollutants in tests produced more when on the roads.

下降速度放缓的大部分原因在于柴油汽车排放的尾气—这为历任政府所支持，因为柴油汽车耗用更少的能源，比汽油汽车排放更少的二氧化碳。2001年，仅14%的汽车使用柴油。2013年，这个比例上涨到了35%。（更绿色的“混合动力”和电瓶车自2006年以来增加了九倍，但仅占汽车总量的0.5%。）二手汽

车尤其有害，但新车也没所期望的那样清洁。很多车在污染物排放测试中排放量低，车在上路时却排放了更多。

Climate change and geoengineering气候变化与地质工程学Fears of a bright planet 地球发光，令人担心Experiments designed to learn more about ways of geoengineering the climate should be allowed to proceed为更好地利用工程学手段研究气候问题所设计的实验应该获准进行下去。SHINY things absorb less heat when left in the sun. This means that if the Earth could be made a little shinier it would be less susceptible to global warming. Ways to brighten it, such as adding nanoscale specks of salt to low clouds, making them whiter, or putting a thin haze of particles into the stratosphere, are the province of “geoengineering”. The small band of scientists which have been studying this subject over the past decade or so have mostly been using computer models. Some of them are now proposing outdoor experiments—using seawater-fed sprayers to churn out particles of the exact size needed to brighten clouds, or spewing sulphur particles from underneath a large balloon 20km up in the sky.发光的物体放在太阳下面会吸收较少的热量。这就意味着如果让地球发一点光的话，受到全球变暖的影响就会小一些。让地球发光的方式，比方说在低空云层上添加纳米级的盐微粒，让云变得更白，或者是将一层薄的雾状物洒向平流层，这些都属于地质工程学的范畴。过去十年左右研究这一领域的一小批科学家主要使用计算机模型，其中一些人现在提出要做室外实验――就是用装有