让城市变得更干净绿化的例子,例如,多种树让它变得干净,英语,翻译 3条,急

问题描述:

让城市变得更干净绿化的例子,例如,多种树让它变得干净,英语,翻译 3条,急

For example,we can plant more trees to make our city more clean and beautiful.
Aonther way is to call on citizens not to throw rubbish in the street.
Commercial advertisements would also contributes to city cleaning.