The air quality in ten cities such as Haikou, Sanya and Zhaoqing attained Grade I, while the air quality in 114 of them was at Grade III, accounting for 33.4%.是什么意思_The air quality in ten cities such as Haikou, Sanya and Zhaoqing attained Grade I, while the air quality in 114 of them was at Grade III, accounting for 33.4%.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句