Neither an explication of the principles of ubiquitous computing nor a list of the technologies involved really gives a sense of what it would be like to live in a world full of invisible widgets.
既非对无处不在计算的原则的解释，也非一个所需技术的清单，提供了在一个充满无形物件的世界里的生活是什么样子的真正意义。
The show function connected to the By Name and By Score links first makes all the lists invisible, then makes the selected list visible.
show函数连接到By Name和By Score链接，首先使所有列表均不可见，随后使所选列表可见。
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