Haze is air pollution in which is mixed up with dust, smoke and other dry particles ,and it obscure the clarity of the sky and interacts with the natural environment. 　　陰霾是空氣污染和灰塵,煙霧和其他干燥粒子,它掩蓋了清晰的天空,與自然環(huán)境進(jìn)行交互。 　　This kind of air pollutant come from a variety of natural and manmade sources. Natural sources ...[繼續(xù)閱讀]

    Recently,haze weather has become a daily one right here in large part of China.People are forced to wear the mask to avoid breathing poisonous air.So it is necessary to find out the reason why leads to that and work out the resolution.If we trace the cause for haze weather ,the main points are as follows ,first,china ‘s air quality standards are rather lax and evaluation factors are limi...[繼續(xù)閱讀]