Let's compare case 2 and 3, since this where some people seem to have gotten confused.

让我们来比较一下第二和第三种情况，因为不少人好像在这里有些困惑。

麻省理工公开课 - 化学原理课程节选

We need to check another entrant from the outside, left wing or right wing, we need to check another entrant in the middle, there is only one possible one there, and there's a third kind of deviation we should check, what's the third type of deviation?

我们需要验证另外一个外部的参选人,左派或右派,我们需要验证另外一个中间的参选人,只有一个可能参选的人,还有第三种要验证的偏差类型,第三种偏差类型是什么

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