类似的研究测试了学生是通过阅读纯文本，还是通过在阅读纯文本的同时观看图片能更好地学习基本的物理和化学概念，结果发现每个人都在观看图片的情况下做得更好。
Similar studies tested whether students learned basic physics and chemistry concepts better by reading plain text or viewing pictures too and everyone do better with the help of pictures.
这让用户不再被动地阅读文本或查看图片；他们要做某些事情来延伸其体验。
It's no longer enough for users to passively read text or look at images; they have to do something to progress their experience.
您应该能够“阅读”图书的封底内容，查看图书的前言，查看封面图片，以及轻松地(且愉快地)将书放入您的购物车并购买。
You should be able to "read" the back cover of the book, check out the book flap, see the cover art, and easily (and impulsively) drop the book in your cart and wander to the checkout line.
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