And in that--I'm so careful, perhaps the blocks are numbered, I'm so careful that every block is in the exactly same position as in the case where my son built it.

我搭的非常仔细，也许这些积木都编了号，但我搭的很仔细，所以每块积木,都在我儿子之前搭那座塔时,摆在的位置上。

耶鲁公开课 - 死亡课程节选

Oh, at MIT, you mean? Yeah, well, so we number all our classes, too, or all our courses.

啊，你的意思是在麻省理工学院吗？确实如此，我们给所有的课程都编了号。

MIT用数字说话 - SpeakingMax英语口语达人