To measure resolution, consider a line pair -> i.e. the wall is a line but to differentiate it, there must be a contrasting equal width along side.
我们可以把长城看作是一对线耦来测得分辨率，比如说把长城当作一条线来分辨，那么这条线两边都要以长城同等的宽度来分辨。
WVGA displays are typically the resolution (800x480) that is necessary to show most Web sites in full page-width.
WVGA显示屏具备800x480分辨率参数，大部分网页都必须使用这个分辨率进行全宽显示。
No matter what screen resolution the visitor has, he or she will see the same width as other visitors.
不管屏幕分辨率如何变化，访客看到的都是固定宽度的内容。
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