Compared with the previous year,the percentage of the cities in the SO2 Pollution Control Zone attaining the standards increased a little bit and the percentage of the cities worse than Grade III reduced by 4.3%.是什么意思_Compared with the previous year,the percentage of the cities in the SO2 Pollution Control Zone attaining the standards increased a little bit and the percentage of the cities worse than Grade III reduced by 4.3%.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句