酸雨形成主要不是雨滴在降落过程中溶进了大气污染物而变酸的。而恰恰相反,高空才是酸雨的形成场所。因为地面排放的致酸物质通过近地面层中碱性粒子略为中和以后,扩散到高空,在高空形成了大范围的致酸雨区。
欧洲、北美和中国依次是世界第一、二、三大酸雨区。
Europe, North America, China are the first, second, third acid rain area respectively.
重庆系我国酸雨最严重的城市,也是世界三大酸雨区之一。
Chongqing is not only the great serious acid rain city in China, but also one of three large acid rain regions.
我国是继欧洲、北美之后,在世界上出现的第三大酸雨区。
South China has become the third largest region with heavy acid deposition after Europe and North America.
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