夕阳下的蚂蚁
幼苗
共回答了19个问题采纳率:94.7% 举报
when you go out try to use the vehicles such as bus and metro as they have less tailpipe emission compare to private car.another way is plant trees around buildings they can purify the air,on the other hand it can avoid global warming occur.
1年前
追问
5