Reduce : To reduce the production of objects Re-use : That allow to return to use a product to give him with the same use or different other one Recycling:
人教版（新目标）（ 2012 教材）初中八上 Unit7 Will people have robots?
Section A Period 2. A hat will be able to help you fly.
Unit 1 Will people have robots? Section A (Period 1)
