One is there's no lag period, notice that antibody levels start rising right away after the second exposure.

第一是没有迟滞期,请注意,抗体浓度迅速上升,在第二次接触抗原时

耶鲁公开课 - 生物医学工程探索课程节选

You know why focus on digital media were because in the wake of Columbine then we entered into a called period of moral panic, the moral panic is when you stop asking questions and start assuming you know the answers.

把关注点放在电子媒体的原因,是在科罗拉多可伦拜高中枪杀案之后,我们进入了一个叫做“道德恐慌“的时期，道德恐慌就是你不再质问,而是开始臆想你已经知道所有的答案。

麻省理工公开课 - 媒体、教育、市场课程节选

You start off with a transition period when you're falling asleep. We call that stage I.

一开始是过渡期,你开始进入睡眠状态，这是第一阶段。

耶鲁公开课 - 心理学导论课程节选

Now we can think about the fourth period, and the fourth period is where we start to run into some exceptions, so this is where things get a teeny bit more complicated, but you just need to remember the exceptions and then you should be OK, no matter what you're asked to write.

现在我们可以考虑第四周期，而且在第四周期,我们会遇上一些特例，所以事情有,一点复杂，但是你只需要记住,这些特例然后就没有问题了，无论你被要求写什么。

麻省理工公开课 - 化学原理课程节选