Sulfur dioxide, a major contributor to acid rain, is an especially serious pollutant because it diminishes the respiratory system's ability to deal with all other pollutants.
二氧化硫是酸雨的主要成因之一，它是一种特别严重的污染物，因为它会降低呼吸系统处理其他污染物的能力。
2
Vegetation in the surrounding area has been destroyed by acid rain due to high sulfur dioxide emissions.
二氧化硫的高排放引起的酸雨使得周围的植物遭到大面积破坏。
3
Huge amounts of sulfur dioxide added to the atmosphere created acid rain, disrupted regional climate and left a lingering fog shrouding parts of the Northern Hemisphere.