就在当时他注意到马路边有个搭便车者。

It was then that he noticed the hitchhiker by the road.

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那么，就在当时海水不断上升的时候，他们是怎么生存下来的呢？

So how did they survive as the waters rose?

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之后，歌蒂回到家看她最喜好的电视节目，就在当时，令人惊奇的事变产生了。

Then Gertie came home to watch her favorite TV show, when something amazing happened.

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She was part of the clinical trial that did this, and they gave everybody certificates after it was done.

她当时就在参与疫苗的临床试验,试验后他们会给每个参与者颁发一个证明

耶鲁公开课 - 生物医学工程探索课程节选

Cities like Gdansk, which we tend to forget about, unfortunately, which is a very important port then and still now.

像格达斯克这样的城市,也就渐渐淡出了人们的视野,而其实,它在当时和现在都仍是,非常重要的港口

耶鲁公开课 - 欧洲文明课程节选

I got interested in that particular question because one of our former PHD students who is now at Texas A&M, asked me to give a lecture on that subject in honor of some anniversary of the universities.

我对这个问题也感兴趣,因为我们学校的一名博士毕业生,现在在德克萨斯农工大学，请我就这个话题演讲,当时是大学的周年纪念日。

普林斯顿公开课 - 人性课程节选