一定要注意，确定性因子实际上是一个统计学概率的估计值，表示正确识别目录的概率。

It is important to note that the certainty factor is actually an estimate of the statistical likelihood that the category was identified correctly.

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使用Coverage Browser的方式(图1)，我们能够看到在单元测试中被包括的每一个文件(和目录)的代码覆盖测试的统计学的总结。

With the coverage Browser (Figure 1), we could see statistics summarizing the code coverage for each of the files (and directories) involved in the unit tests.

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到目前为止阿拉伯面临的最大困难——同时也是为证明日渐逼近的巨变而提交的社会经济问题目录中的最主要项目——就是人口统计学的问题。

By far the biggest difficulty facing the arabs-and the main item in the catalogue of socio-economic woes submitted as evidence of looming upheaval-is demography.

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