We bought a Danish phrase book.

我买了一本丹麦常用语手册。

《柯林斯英汉双解大词典》

I bought a book about penguins.

我买了一本关于企鹅的书。

youdao

She went to the bookstore and bought a book.

她去书店买了一本书。

youdao

The publisher has offered refunds to consumers who bought the book directly from it.

FORBES: Magazine Article

" A third: "I bought the book after so many people at work were raving about it.

WSJ: Why 'Fifty Shades of Grey' Is a Best Seller | Dear Book Lover

So, if you were the median ebook buyer last week, you bought that book, likely at that price.

FORBES: Is $8.00 Too Much for an Ebook?