问答题
翻译题：The price will be about two-thirds that of a new book and generally they are in good condition. If you take a course for which the professor has selected a new text, then you are stuck paying the full price for it.
(旧书)价格大约是新书的三分之二，一般来说还是完好无损的。假如你选修的课程老师指定用新的教科书，那你就得按原价买新书了。