The particulate remains the key pollutant affecting the air quality in China. The annual concentration of the urban particulate in 64.1% of the cities exceeded Grade II.是什么意思_The particulate remains the key pollutant affecting the air quality in China. The annual concentration of the urban particulate in 64.1% of the cities exceeded Grade II.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句