可以
If the second-hand text-books can be recycled and put it into use again, people can avoid wasting moneyand in this waythey savthe paper
Recyclethe second-hand text-books and money and paper can be saved
可以
If the second-hand text-books can be recycled and put it into use again, people can avoid wasting moneyand in this waythey savthe paper
Recyclethe second-hand text-books and money and paper can be saved