According to statistic of International airport association, two years in the past the United States has had airport of 27 wife and children home to shut, more airports prepare to shut.
据国际机场协会统计，在过去两年美国已经有27家小型国内机场关闭，有更多的机场准备关闭。
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Association rules can find some correlation info between these fields. By use of statistic techniques of data mining we can draw exact and plain statistics reporting from the chaotic and massive data.