We didn't have the same methods of diagnosis that we do now, so maybe it was just not diagnosed then.

那时医生的诊断手段远不及现在,因此,这些病可能只是诊断不出来

耶鲁公开课 - 生物医学工程探索课程节选

No, I'm sure you'll get dangerous moments if you are going to go into war and all that kind of thing, but.

不，我相信如果你去战场，那时所有的事情都会很危险。

英国的军人 - SpeakingMax英语口语达人

I was curious; I was even a user assistant at the time, I was certainly a geek at the time and yet I had no sense really of what actually went on in a classroom like this.

我很好奇，在当时我是一名助教，那时我肯定是一个怪胎,我真的不知道,这样的课上讲的是什么东西。

哈佛公开课 - 计算机科学课程节选

If I'm saying something that you don't understand, the chances are pretty good that there's 25 or 50 other students in the class who don't understand it either.

如果我正说着什么你不懂的东西，那时就是举手的好机会,因为有25或50个别的学生,也不懂。

耶鲁公开课 - 死亡课程节选

We did not yet have good methods for screening blood to look for HIV, we didn't have the ELISA technique that I--we talked about in section a few weeks ago and so there was a great concern that there might be other diseases that you'd be passing on from-- unknowingly from this subset of patients that you're isolating the vaccine from.

那时我们还没有一种好的方式,来从血液中筛查出HIV,也还没有ELISA技术,该技术我们在几周前的一个章节中谈到过,因此,那时仍存有,很大的担心,那就是你有可能,在不知情的情况下,被那些病人,感染上其它疾病,因为疫苗就是从他们身上提取出来的

耶鲁公开课 - 生物医学工程探索课程节选

They didn't have atoms, but more than just matter.

他们那时还不知道原子呢,仅仅略高于物质的层面

耶鲁公开课 - 死亡课程节选