纸书应该还是会有些市场，但很难说这市场会有多大，因为它的大小并不取决于人们的阅读总量这一类的宏观趋势，而取决于个体出版人的聪明才智。

There should be some market, but it's hard to foresee how big, because its size will depend not on macro trends like the amount people read, but on the ingenuity of individual publishers. [4]

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一种囊状的呼吸器官，见于蝎子和蜘蛛等蜘蛛类节肢动物，由象书的纸页一们平行排列着的膜状重叠物组成。

A sacculate respiratory organ found in some arachnids, such as scorpions and spiders, consisting of several parallel membranous folds arranged like the pages in a book.

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