It tells us of the critical junctures in the nation's history, and that will help us then slot the different prophets in.

告诉我们这个国家历史上的重大转型期，这就能帮我们锁定不同的预言家。

耶鲁公开课 - 旧约导论课程节选

So it's very important that the double bond locks it in a particular conformation.

所以双键把它们锁定在某一特定形状,是十分重要的。

麻省理工公开课 - 化学原理课程节选

So the first thing we got to do is sort of lock on to the tonic.

我们来听一下，我们要做的第一件是是锁定主音。

耶鲁公开课 - 聆听音乐课程节选

You need to pin down an object of study, a first principle from which other principles can emerge, and part of the process is to say, "Hey, it's not literature we're talking about.

首要原则是，需要锁定要谈论，即学习的目标，可是，谁知道什么是文学。

耶鲁公开课 - 文学理论导论课程节选

It's a bit more-- to continue with the metaphor of the on-of switch-- as though not only is the switch turned to off, there's a lock on the switch.

要继续用开关的比喻-,就有点奇怪了-,似乎开关的上面，还有一个锁定装置。

耶鲁公开课 - 死亡课程节选