14. 把垃圾分类 sort the garbage
13. 请准时 Please be on time.
12. 短途旅行 travel a short distance
11. 关灯 turn off the lights
10. 应该做某事(语气较强) ought to do sth.
9. 应当做某事 be supposed to do sth.
8. 省钱/ 能源/ 电 save money/ energy/ electricity
7. 鼓励某人做某事 encourage sb. to do sth.
6. 塑料袋 plastic bags
5. ……的两面 both sides of …