It will be more usable than a netbook, more versatile than an e-book reader.
它将比一个上网本更有用处,比电子书阅读器更多才多艺。
To make existing content much more usable, add structure to it, which enables you to.
为了令现有内容更具可读性,可为其添加结构,从而使您能够。
This perfectly illustrates the principle that good abstractions make everything more usable.
这也正好说明了这样一条原则:好的抽象能够让任何事物更为有用。
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