Already from the very opening lines we see in this a clue to the theme that is going to follow.

打从一开始,我们即看出这条线索,连系到即将发生的主题。

耶鲁公开课 - 政治哲学导论课程节选

As soon as lanthanum takes that electron, this level rises ever so slightly, and then we jump down here and fill in the lanthanide.

一旦镧得到了电子，这一层就会稍稍上升，然后我们向下填一下镧系元素。

麻省理工公开课 - 固态化学导论课程节选

And indeed, as it happens, in our department this very semester there is such a class devoted, all semester, to the topic of consciousness.

当然,这也的确是如此,我们系在这一学期,就有这么一个班,花了整整一个学期,来讨论意识问题

耶鲁公开课 - 死亡课程节选