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When the school begins, students need to start their new semester, the first thing they do is to buy the text books, most students will buy the new books, while it has become popular that students choose to buy the second-hand text books. It is good that text books are recycled, it can save the resource and reduce the waste, thus leaving more resources to the next generation. What’s more, it also saves students a lot of money. Students can buy the second-hand book at a very low price, students use the book only for a semester, it will become useless after they reading it, so there is no need for them to spend so much money on the contemporary book.

當開學的時候，學生需要開始他們的新學期，他們做的第一件事情就是買課本，大部分學生會買新的課本，然而一些學生選擇買二手書，這變得越來越流行。課本循環使用，這是好的，這能節省資源和減少廢物，給后代留下更多的資源。而且，這也省下學生很多錢。學生可以低價買下二手書，他們的書本只用一個學期，看完后就會變得無用了，所以對他們來說沒必要花那么多的錢在暫時性的書本。