You're standing near a track as an out-of-control train hurtles toward five unsuspecting people.

你正站在铁道旁，一辆失控的火车向五个毫无防备的人猛冲而去。

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The findings, she said, challenged some long-standing assumptions, such as people showered, on average, for five minutes.

她表示，得到的这些调查结果挑战了一些长期以来的假设，例如，以往认为人们平均每次淋浴用时5分钟。

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