空气污染与雾霾的英语作文
Haze is a kind of air pollution it is mixed with smoke and dust and bad air in Beijing haze phenomenon particularly severe haze of the reasons people smoke indiscriminate tree felling the main reason is industrial pollution haze of human impact it will do harm to people's health, especially the elderly and children now people have realized the harm of haze are trying to solve the problem
According to some reports,the frequent appearances of smog obscure the clarity of the sky recently.Some people drove slowly on the road because they could not see clearly. They also suffered from many illnesses caused by smog. Smog is the general expression of various higher-than-permitted suspended particulate matter (such as PM2.5) in the atmosphere,which express the state of air pollution .It contains fog and haze,both of them are disastrous weather. Fog consists of a large number of tiny water or ice crystals.It’s actually a harmless natural phenomena that makes visibility worse .Haze is air pollution in which is mixed up with dust, smoke and other dry particles. The components that make up haze may have negative effect on people's health, especially for children and the old. So it’s necessary to find out the reason why leads to smog and work out the resolution.If we trace the cause for smog weather ,the main points are natural causes that include windblown dust and manmade causes which include three aspects.Firstly,china 's air quality standards are rather lax and evaluation factors are limited.Secondly,some enterprises just go for economic interests instead of observing relevant law and regulations.Obsolete equipment、industrial fuel burning and manufacturing operations are high likely to emit much wasted air.Thirdly,across our society ,relevant protection awareness has not built up.Just for the sake of convience to go out,people rely more and more on travelling and working by car while car is the main cause for smog.
The main reason recently Harbin haze weather is the formation ofmeteorological conditions.
Harbin is not a day over the pollutant accumulation, 4 days earlier,Harbin has been air pollution problems, when Omaha continuous inhigh-pressure cold air control, like to wear a "hat" city so that contaminants do not spread, followed by warm air to the south, inthe muddy, warm air is brought in North China area pollution, air quality and to Harbin covered with a layer of ash. The static winduntil yesterday morning, the horizontal direction is not conducive to the diffusion of lead pollution, like "snowball" as more heap more,hold in the sky, eventually forming a haze.
空气污染与雾霾的英语作文视频
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