英語(yǔ)作文《城市交通帶來(lái)的污染》

【專家解說(shuō)】：在我國(guó)經(jīng)濟(jì)較為發(fā)達(dá)的城市，私人汽車擁有量的高峰逐漸顯現(xiàn)。交通污染分兩大類，一是噪聲污染；二是空氣污染。空氣污染主要是指一氧化碳，碳?xì)溲趸锖偷趸衔锶?，一氧化碳的危害你知道吧，碳?xì)溲趸锬軌蛞鸸饣瘜W(xué)污染，氮氧化合物是形成酸雨的主要因素之一，它具有強(qiáng)氧化性和酸性。類外，二氧化碳也算是污染物之一，引起溫室效應(yīng)的罪魁禍?zhǔn)住?我們不太可能消除這些現(xiàn)象，但能夠減弱。當(dāng)交通秩序很好的時(shí)候，交通沖突也就減少了，鳴喇叭的汽車也就不會(huì)很多啦；同時(shí)，在好的交通秩序下，汽車也不會(huì)頻繁的加減速，運(yùn)行得更為流暢，大量的研究都已經(jīng)證明了頻繁的加減速會(huì)加大尾氣的排放量，增加空氣污染。所以說(shuō)交通的秩序和流暢程度對(duì)于減小交通污染具有很大的幫助。 再者，污染是由汽車產(chǎn)生的，所以要減小污染還得從污染源本身著手?，F(xiàn)在所有的汽車都有三元催化劑，這極大地減小了污染物的排放，但是這些催化劑也不可能完完全全地去讓所有的污染氣體發(fā)生轉(zhuǎn)換，因此有必要去尋找更好的污染氣體消除方式。其實(shí)石油儲(chǔ)量已經(jīng)不多啦，再者電動(dòng)汽車已經(jīng)成為未來(lái)汽車發(fā)展的一個(gè)趨勢(shì)，所以這種氣體污染相信在不久的將來(lái)將不復(fù)存在。對(duì)于噪聲污染，最好的辦法就是提高汽車各個(gè)部件之間的精度啦，精度提高了摩擦自然也就減小了啊，噪聲也就不斷的down,down,down……，但是我們不能夠把噪聲降到很低很低，不是我們做不到，而是出于安全的考慮。你試想一下，你在大道上走著，突然后面無(wú)聲無(wú)息的串出來(lái)一輛汽車，多么的危險(xiǎn)啊。所以現(xiàn)在有就有了噪聲發(fā)生器這個(gè)玩意——制造噪聲 In our economy more developed city, private car ownership revealed the peak gradually. Traffic pollution is divided into two categories, one is the noise pollution; 2 it is air pollution. Air pollution is mainly refers to carbon monoxide, hydrocarbon oxide and nitric oxide three kinds of, you know, the dangers of carbon monoxide and hydrogen oxide can cause photochemical pollution, nitric oxide is one of the main factors which contribute to acid rain, it has strong oxidizing and acid. The class, carbon dioxide is one of pollutants, cause the greenhouse effect of the culprit. We are not likely to eliminate the phenomenon, but can decrease. When the traffic order are good, traffic conflicts also reduced, blew his horn car won't many la; At the same time, in the good traffic order, the car won't frequent and deceleration, operate more fluent, a large number of studies have proved frequent and deceleration will increase exhaust emissions, increase air pollution. So said the order and degree of traffic flowing to reduce traffic pollution has a lot of help. Moreover, pollution is produced by car, and, therefore, to reduce pollution from pollution sources to itself. Now all cars have three yuan catalyst, it greatly reducing the emissions of pollutants, but the catalyst can't completely to let all the pollution gas conversions, so it is necessary to find better ways to eliminate the polluting gas. In fact oil reserves are numbered la, moreover electric cars have become future a tendency of the development of the car, so the gas pollution believe in the near future will disappear. For noise pollution, the best way is to improve the car parts of it between accuracy, precision increased friction nature also reduced the ah, noise are down, down, down... , but we can not put down to very low noise is low, not we couldn't do it, but because of safety concerns. You just think, you walk on the road, suddenly behind a string of silent out a car, how it's dangerous. So now have had noise generator this stuff--made noise