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During the experiment, Barrett took a train ride.

实验期间，巴雷特乘了一次火车。

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How you'll do this is another mystery, as there is going to be no communication between the two of you during the experiment.

你将如何做到这一点则是另一个谜，因为在实验过程中你们两人没有交流的机会。

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But Dr Zubieta also used positron emission tomography scans during the experiment to peer inside the men's brains.

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Cash participants were unable to purchase anything online during the experiment, and MasterCard participants had to pay their landlords in cash.

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Not a single cell phone went off during the experiment.

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