There is no systematic difference in membership between the group of mechanics who do first-time jobs and the group of those who do rework jobs.
在第一次工作的技工组和返工的技工组之间没有系统性差异。
These findings do not imply that urbanism makes little or no difference.
这些发现并不意味着城市生活方式几乎或根本没有影响。
But, in economic terms, there's no difference between losing the tickets and losing $400, so why do you behave differently?
但是,从经济学角度上看,丢了票和丢了400美元没有什么不同,但你为何会做出不同的反应呢?
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