The computer then selects pairs of words in a bin to see if they co-occur more often than they would by chance in the original documents.

计算机随后从存储文件中挑选若干对词汇，分析它们同时出现的次数是否高于它们偶然出现在原始文档中的次数。

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For example, it is easy to imagine a situation in which the following sentence occur. "we also observed the creation of two electron-positron pairs."

例如，很容易设想一种情况，在这种情况下有如下的句子，“我们也观察两个正电子成对的产生”。

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