Spain vs Switzerland: I think it's safe to say that, unless Switzerland gets an easy draw and makes it to the semis or finals, we'll never see a Roger Federer vs Rafael Nadal encounter in Davis Cup.
西班牙VS瑞士：我认为可以说，除非瑞士人一路没有阻挠，如履平地，直接杀入半决赛或决赛，否则你很难看到费德勒和纳达尔在戴杯中现身。
But the odds of moving on after a draw might be even better than 58% suggests, once you weed out teams that got a draw but never were likely to advance to begin with.
不过，要是剔除那些实现了平局但一开始就没什么希望晋级的球队，剩下的球队首战打平后还能出线的机率可能要高过58%。
And that would be equivalent to what we did with a previous change of variables. So, in this case, certainly you would never draw a picture like that.
这将与我们先做变量替换是一样的，所以，在这种情况下，大家不会做出那样的图。
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