循环使用课本 recycling of textbooks
Statistics show that if primary and secondary school textbooks as well as teaching books could be recycled, at least 20 billion yuan ($3 billion) could be saved. 统计数据表明，如果能够循环使用中小学教科书和相关教学用书，至少可以节省200亿元（30亿美元）。 Factors hampering the recycling of textbooks include an underdeveloped industrial chain that leads to the high cost of textbook recycling, students’ dislike of textbook markings, and the poor “hygienic” conditions of these books. 影响循环使用课本的因素包括：产业链欠发达，循环使用课本成本高；学生不喜欢课本上已经做过的标记；以及二手课本不那么“卫生”。 Establishing a system of recycling textbooks can not only save resources but also help develop the awareness of environmental protection and the sense of responsibility among students. 建立循环使用课本系统，不但能够节约资源，还能培养学生的环保意识和责任心。 Difficulties in pushing forward the recycling of textbooks are understandable. For instance, some argue that recycled textbooks will bite into the profits of interested parties. 推动循环使用课本的困难是可以理解的。例如，有人就说，循环使用课本会影响利害关系方的利润。
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