If the person has not mastered the basic concept, the person must fail, must get four or less.

如果他没有掌握基本的概念，那就一定不能通过考试，只得十分之四或更少。

麻省理工公开课 - 固态化学导论课程节选

What I'm going to do is basically run through my attempt to reconstruct-- my attempt to lay out the basic ideas from this series of four or five arguments that Plato gives us.

我要做的是,基本上是重新,把柏拉图给我们的这4,5个论点中,一些基本的观点拿出来讨论一遍

耶鲁公开课 - 死亡课程节选