第一我们可以步行或者徒步出行。可以避免可以避免交通堵塞，减少空气污染。

First, we can travel on foot or on foot. It can avoid traffic jams and reduce air pollution. The second is not to litter or spit. Can make the city clean and comfortable. Third, try to prevent people from using garbage bags. Can beautify the city and protect the environment. Fourth, recycle old textbooks. You can save resources and protect trees. Fifth, enhance environmental awareness and carry out garbage classification.

First we can travel on foot or on foot. It is possible to avoid traffic jams and reduce air pollution. Second, don't litter, don't spit. Can make the city clean and comfortable. The third is to try to stop people from using garbage bags. Can beautify the city, protect the environment. Fourth, recycle old textbooks. You can save resources and protect trees. Fifth, enhance environmental awareness, garbage classification.

First, we can walk or walk. It can avoid traffic jam and reduce air pollution. Second, no littering, no spitting. It can make the city clean and comfortable. Third, try to prevent people from using garbage bags. It can beautify the city and protect the environment. Fourth, recycling old textbooks. It can save resources and protect trees. Fifthly, strengthen the awareness of environmental protection and carry out garbage classification.