Right, having done that, we can certainly get to more complicated things, so for example, suppose I look at that expression.

好，说完了这一点，我们就可以讲些复杂些的话题了，例如，假设我看到了这个表达式。

麻省理工公开课 - 计算机科学及编程导论课程节选

Now, the subject, free will, is a very, very-- The subject of consciousness is a very complicated.

这个话题,自由意志,是一个非常非常,关于意识的话题非常复杂

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And like all the other topics we've talked about in this class, it's a complicated subject, about which one could spend a great deal of time.

和课堂中涉及的所有话题一样，这是个复杂的问题，需要很长时间才能搞清楚。

耶鲁公开课 - 死亡课程节选