Many old books are now out of print.

许多老书现已绝版。

youdao

He often read the priest's old books and got him to explain and enlarge upon them.

他经常阅读神甫的旧书，请他解释并扩展。

youdao

Don't throw away these old books.

不要扔掉这些旧书。

youdao

Some of these things may be hidden inside old books.

VOA: special.2010.06.28

Furthermore doesn't the study of old books often very old books ? risk overlooking the issues facing us today?

此外，研究这些巨著,通常年代久远,不会有忽略我们今日所面临议题的风险吗？

耶鲁公开课 - 政治哲学导论课程节选

I like a lot of old books.

我喜欢很多老书。

要继续努力 - SpeakingMax英语口语达人

This one held mostly old books, books that had not been opened for years.

NEWYORKER: Free Radicals

That if it engages kids it is because it is more exciting and bright than tired, old books.

FORBES: Learning Should Fit the Child

So in 1974 Gerda Koontz quit her job and started negotiating repurchase prices for 40 of his old books.

FORBES: Suspense Ratios