In book form, it has sold more than three million copies to date.

到目前为止，这本书已经卖出了300多万册。

It proved popular and quickly led to the publication of other newspaper comic strips in book form.

它非常受欢迎，并迅速带动了其他报纸的连环画以书的形式出版。

That's a story in book form, with chapters.

故事成书还带章节的那种。

The comic novel, The Posthumous Papers of the Pickwick Club, appeared serially in 1836 and 1837 and was first published in book form in 1837.

这部喜剧小说《匹克威克俱乐部遗稿》(即《匹克威克外传》)于1836年至1837年连续刊載，1837年首次以书籍形式出版。