He went to the train station and bought a one way ticket for New York City.

VOA: special.2009.04.11

and you get a ticket for the Tate Modern

你再买一张泰特现代美术馆的门票，

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It eventually outputs a ticket with the right amount, but my God, how many steps does it take for us to get there?

最终它适当地输出了一张票，但是我的天，我们需要多少步骤才能得到？

哈佛公开课 - 计算机科学课程节选

So, you know, I actually paused and tried to lend a hand with this and what struck me at the end of this experience of walking this individual through the process of buying a ticket was actually a recurring theme in my mind for this course.

所以，你们懂的，我停下来帮助了她,令我惊奇的是,这次买票的经历,正是我们这次课程的,一个主题。

哈佛公开课 - 计算机科学课程节选

So, I did some reading quickly and she looked at the screen for a moment and then I suggested we hit the top right button to purchase new Charlie Ticket, whatever that is, value tickets and passes.

所以，我快速阅读了一下，她看着屏幕一段时间,然后我建议点击右上边的按钮,来买一张新的Charlie票，不管怎样，那是一张有值票，可以通过。

哈佛公开课 - 计算机科学课程节选