来自《耶鲁大学开放课程：博弈论 第9集 第9集》

• 
  
  her expected payoffs must be equal
  由此可以得出塞丽娜混合的概率
• 
  
  and I solved out for Serena's mix, this is Serena's mix.
  这样我也就解出了塞丽娜的混合策略
• 
  
  Let's do it again.
  我们再来一遍
• 
  
  Here I'm wishing I had another board.
  希望还有一块没用过的黑板
• 
  
  I don't want to lose those numbers entirely,
  我可不想把这些数字都擦掉
• 
  
  so I'm going to try and squeeze in a bit.
  只好在这边挤一挤了
• 
  
  I know what I can do.
  我知道该怎么办了
• 
  
  Let's get rid of this one entirely.
  把这块黑板推上去吧
• 
  
  There we go, that works.
  这样就可以了
• 
  
  Let's get rid of this one entirely.
  我把这块黑板也推上去
• 
  
  I can still see my numbers.
  这样我还可以看见那些数字
• 
  
  Let's do the converse. Let's do the trick again,
  我们再反过来用一次这个捷径