来自《耶鲁大学开放课程：博弈论 第13集 第13集》

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  So there's a certain amount of jargon that goes along with trees,
  树形图里有一些相关的术语
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  and I want you to go home and read the textbook
  希望你们回去看课本弄懂他们什么意思
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  and know what that jargon is. So these spots, these dots in the tree,
  树上的这些点
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  these things are called nodes.
  在这里叫做节点
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  And in fact the end points of the tree where the payoffs are,
  树上标注了收益的点
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  these are also called nodes but they're called end nodes.
  它们也是节点 但是被称作终点
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  These branches in the tree, the branches, here they are,
  树形图里面的这些树枝
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  the branches are called edges.
  它们叫做连线
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  So a tree consists of nodes, edges,
  所以说树形图包含了节点 连线
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  and these missing dots are the end nodes.
  还有剩下的就是终点了
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  The end nodes are associated with payoffs.
  终点和收益是紧密联系的
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  Do we need to write that? That's obvious right:
  不需要写下来了吧 很显然的