What if a book has an unknown publication date, or more than one author?

如果一本书有一个未知的出版日期，或者有多个作者，怎么办？

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Each contains further information on the video it represents, including the category, title, description, publication date, author, and duration.

每个包含它所表示的视频的更多信息，包括类别、标题、描述、发布日期、作者和持续时间。

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All that's left to do now is to loop over the collection, printing the content, author, and publication date of each.

现在所有剩下要做的就是迭代通过集合，打印出每个帖子的内容、作者和发布日期。

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My business partner and co-author Steve Blank, a workaholic Silicon Valley legend, imposed this discipline I recommend: "date night" with his wife Alison.

CNN: Switching off from the 24-7 work ethic

With the intuitive control pad and a built-in library-management system, customers can easily navigate and organize their library by title, date last read and author.

ENGADGET: New Kobo eReader gets wireless connection, faster processor, pretty colors