It's a used book.

这是一本旧书。

youdao

Because it's all digital, it eliminates the used book market and eliminates any sharing, and because homework and tests are through an access code, it eliminates any ability to opt out.

因为它全是数字化的，它淘汰了二手书市场，也杜绝了任何共享，而且因为作业和考试都是通过准入码进行的，它让人们失去了选择退出的任何能力。

youdao

But because it's all digital, it eliminates the used book market and eliminates any sharing, and because homework and tests are through an access code, it eliminates any ability to opt out.

但因为它全是数字化的，它消除了二手书市场，也消除了任何共享，而且因为作业和考试都是通过准入码进行的，它消除了任何选择退出的能力。

youdao

The book is kept by the Library of Congress and has never been used at another swearing-in.

VOA: special.2009.01.19

Again, a question the book asks is whether that ideal of justice can be used as a model for politics.

而本书所提问的是,理想的正义,是否能为政治起示范的作用。

耶鲁公开课 - 政治哲学导论课程节选

And this is from Damasio's excellent book Descartes' Error: He used to be a really responsible guy, a family man, very reliable, very trustworthy.

在达马西奥的杰作，笛卡尔的错误：,他曾是负责任的家伙，一个居家男人，非常可靠，值得信赖。

耶鲁公开课 - 心理学导论课程节选

For our whole history Follett has been in the used book business.

FORBES: The Future of the College Bookstore

We have a really excellent used book store with a coffee shop attached and plenty of other types of media to buy.

FORBES: A Farewell to Borders

My uncle calls it "the only used book store where you can go with a list, " but I've never bothered with one.

CNN: STORY HIGHLIGHTS