真不明白为什么读者总是爱把不要的书本，学校的课本，参考书，又旧又黄的小说都丢进图书馆的还书处，一丢就是十多本，气煞！！！I wonder why readers like to throw their unwanted books,school textbooks, assessment books, damaged books into the bookdrop ,they throw more than 10 books at once, pissed off !!