I remember reading a--I like to browse among old books -I was reading a nineteenth century book about how to be a banker.

我比较喜欢翻翻旧书,我记得读过一本19世纪的老书,讲如何成为一名银行家

耶鲁公开课 - 金融市场课程节选

This new edition of this old book is an excellent one.

这本旧书的新版做得非常好。

耶鲁公开课 - 现代诗歌课程节选

So, there may be a lot of used copies floating around.

所以会有很多旧书

耶鲁公开课 - 心理学导论课程节选