But with a digital book, all we need to do is to type in a key word and the result will come up instantly.
但是有了电子书，我们所需要做的就是键入一个关键字，然后结果就会立即出现。
You select a book from a digital book shelf; the pages flip in 3-D, and there’s a tool enabling you to increase font size or change the font.
你从电子书架上选择一本书，书页翻页具有3D效果，并且有个工具可以增加字体大小或者更改字体。
Apps that link to external mechanisms for purchases or subscriptions to be used in the app, such as a "buy" button that goes to a web site to purchase a digital book, will be rejected.
不允许应用使用含有外部购买或外部订阅机制的链接，如设置“购买”键引导顾客到某网站买电子书。
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