汽车排放的尾气严重污染了达卡的空气，随着无铅汽油的出现略改善了空气的质量，但是有毒的一氧化碳气体依旧存在着。
Dacca's air is burdened by vehicleemissions; air quality improved after the advent of unleaded gasoline, but toxins such as carbon monoxide persist.
研究人员发现，随着爱尔兰酒吧引以自豪的空气污染减少了83%，其员工的呼吸状况已经有了较大改善。
Researchers have found the respiratory health of staff has improved significantly, with Irish pubs boasting an 83% decrease in air pollution.
随着城市机动车保有量的不断增长，机动车尾气污染问题已经成为城市空气污染最重要的来源，控制机动车尾气污染也已经成为改善城市大气环境质量的当务之急。
With the growing increase of the retention of the vehicles in the city, the gas emitted from vehicles has become the most important source of the urban air pollution.
随着生活的改善，消费者对乳制品质量要求的日渐提高，乳制品中微生物的污染程度成为影响市场竞争的关键因素。
Along with life improvement, dairy products quality is enhanced day after day. In the dairy products, microorganism's pollution becomes the key factor that affects the market competition.
随着城市的飞速发展和道路基础设施的逐步改善，城市交通密度也逐年增加，交通噪声污染情况越来越严重。
With the city's rapid development and gradual improvement of road infrastructure, urban traffic density increased year by year, the noise pollution of road traffic has become increasingly serious.
随着城市的飞速发展和道路基础设施的逐步改善，城市交通密度也逐年增加，交通噪声污染情况越来越严重。
With the city's rapid development and gradual improvement of road infrastructure, urban traffic density increased year by year, the noise pollution of road traffic has become increasingly serious.
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