The air pollution is the problem that people concern with,the examination of air polluction is the premise and the essential condition of the environmental protection and pollution control.是什么意思_The air pollution is the problem that people concern with,the examination of air polluction is the premise and the essential condition of the environmental protection and pollution control.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句