但是读懂这种语言，并能够预测出一维元素如何在三维空间当中折叠的，则需要一本数学词典。
But to read this language and predict how the one-dimensional string will fold up in three-dimensional space, you need a mathematical dictionary.
市场营销人员利用二维码，可以轻易地在在线广告中增加数字元素，并能像在线一样，在现实世界中追踪消费者。
QR codes promise marketers a simple way to ad digital elements to old-line advertisements and potentially track consumers in the physical world they way they can online.
大多数层次结构都是一维的，从而意味着所有元素都具有一个公共的根元素。
Most hierarchies are single dimensional, which means that all elements share a common root element.
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