Some people asked me, if they bought the earlier version of the text, you can find the translation to the earlier version of the text on these question numbers.

有人问我，如果他们买了这本书的早期版本，你们找到这本书早期版本的翻译,关于这些问题的数字。

麻省理工公开课 - 固态化学导论课程节选

But equally the case, that the views that I'll be developing in the lectures are, although not necessarily unique to me, aren't all laid out in the readings.

还有这种情况，我在讲座中展开讨论的观点，尽管对我而言并不一定珍奇，在书中也无法全部找到。

耶鲁公开课 - 死亡课程节选