如图2所示，优化的Web站点的共同主题就是使用纵向的超文本列表。

As seen in Figure 2, a common theme among optimized Web sites is the use of vertical lists of hypertext.

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提供列表筛选、增长率筛选、对比筛选、纵向分析、技术分析等多种方法。

To provide a list of screening, the growth rate of screening, screening contrast, vertical analysis, technical analysis and other methods.

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