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。
A fundamental difference between paintings and other art forms is that there is no prescribed time over which a painting is viewed.
绘画与其他艺术形式的根本区别在于，观看一幅画没有规定的时间。
Since the size of a win is random, there should have been no difference between big winners and small winners at the time they bought their ticket.
由于奖项大小是随机的，所以在买彩票那个时间点，大奖赢家与小奖赢家之间应该不存在差别。
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