正如我们讨论过的，地壳由位于熔融岩石的地幔上的大型板块构成。

As we've discussed, Earth's crust is made up of large plates that rest on a mantle of molten rock.

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正如我们讨论过的，鸟类显然是恐龙的后代，与一些恐龙物种有许多共同之处，比如羽毛，甚至飞行，当然还有产卵。

As we've discussed, birds are apparently descendants of dinosaurs and shared many commonalities with some dinosaur species, like feathers and maybe even flight and of course egg laid.

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除此之外是速度，如我们讨论过的那样。

Out of that pops the velocity, as we discussed.

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These are all perfectly important topics, but they're not, as I say, topics that we're going to be talking about in this class.

这些都是十分重要的话题，但是，如我所讲，他们不是，我们在这堂课上要讨论的话题。

耶鲁公开课 - 死亡课程节选