九年级作文带翻译air pollution
九年级作文带翻译airpollutionAirpollutionisoneofthemajorproblemsofthemodernworld.Agreatdealofenergyisneededtorunthefactoriesofmodernindustrialnations.Automobile,trains,planesandbussesneedenergy,too.Nearl...
九年级作文带翻译airpollutionAirpollutionisoneofthemajorproblemsofthemodernworld.Agreatdealofenergyisneededtorunthefactoriesofmodernindustrialnations.Automobile,trains,planesandbussesneedenergy,too.Nearl...