For classrooms, Apple has been exploring electronic-textbook technology.

苹果公司一直在为教育领域研发电子教科书技术。

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Electronic texts can be updated at the speed of a download rather than waiting for the next edition of a ponderous textbook.

电子文本可以以下载的速度更新，而不是一直等到新版本的笨重的教科书的发行。

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Fundamentally, UpToDate is an electronic textbook, incorporating a minimal amount of technology that enables rapid cross-referencing and frequent online updates.

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Regardless, this is further evidence that the electronic textbook market is one to keep an eye on -- if only someone could figure out how to do it right.

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