Now, you've arrived at the concert hall and you're looking through your pocket and you realize they're gone--you've lost them.

现在，你已经到了音乐厅门口,你掏了半天兜后,你意识到票没了，你把他们弄丢了。

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These are primarily communication systems which act to allow your other organ systems to work in concert.

正是这些基本的通讯系统,保证了体内各系统的协调工作

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So the point of this is: once you get these kind of progressions locked in your ears, you go to a concert and you can begin to chart what the piece is doing in terms of its harmony.

这里的重点是，一旦你的耳朵牢牢记住了这些进程，你去听音乐会的时候就能开始分析一部作品的和声了。

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But then they posed a different version of the same question and the different version was: Suppose you had ordered tickets to pick them up and pay for them at the window at the concert hall and you brought $400 in cash in your pocket.

然后，他们又对同样的问题,给予了不同的假设场景：,假设你预定了两张票,你得去音乐厅的窗口,付钱然后取票,你随身带了四百美元。

耶鲁公开课 - 金融市场课程节选