I really want to buy this book.

我真的很想买这本书。

youdao

I don't know where to buy this book.

我不知道该去哪里买这本书。

youdao

It took me five yuan to buy this book.

买这本书花了我五元钱。

youdao

I'm not sure that a lot of people are going to read this book, but a lot of people might buy it as a keepsake.

我不确定会不会有很多人读这本书，但很多人会把它当成一种纪念品买下来。

耶鲁公开课 - 1945年后的美国小说课程节选

So if you don't buy this book this week, I may be able to make the advance copy of the new edition available for some of you next week.

如果你这周不买,可能下周你们,就能买到新版的了

耶鲁公开课 - 博弈论课程节选

Some of them may even want to buy this book.

ECONOMIST: Theodor Seuss Geisel

After planning how to spend (and save) the money we would make with this sale, the client called and decided not to buy the book.

FORBES: 3 Smart Ways to Reinvest in Your Company (Without Adding to Your Expenses)

As for the original bookstore chain, its chairman, Leonard Riggio earlier this year said he wanted to buy its 700-strong chain himself, but not the e-book reader.

BBC: Barnes & Noble shares jump 24% on reports of Nook bid