Discharge Amount of Key Pollutants in Exhaust Emission In 2001,the discharge amount of SO2 in the exhaust emission in the entire country hit 19.478 million tons.是什么意思_Discharge Amount of Key Pollutants in Exhaust Emission In 2001,the discharge amount of SO2 in the exhaust emission in the entire country hit 19.478 million tons.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句