在分析了众多优秀的网页排序算法的基础上，本文设计了新的网站级别系统。
Based on the analysis of lots of excellent page sorting arithmetics, this paper designs new Web level system.
把这一发现跟五秒钟测试进行对比，结果显示用户对可用性的态度，在任务级别和整个网站级别上会存在差异。
Contrast this finding with the 5 seconds tests results which shows that user attitudes about usability are different at the task vs. whole website level.
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