I think most and you have talked a little bit about benzene over this past week in recitation.

我想你们大多数人,都在这周的习题课上讨论过苯环。

麻省理工公开课 - 化学原理课程节选

And he talked about this over 200 years ago; Aristotle over 2000 years ago.

他在二百多年前谈到快乐;,亚里斯多德在二千多年前也谈过。

哈佛公开课 - 幸福课课程节选

And the engineering part of that is sort of the part that I talked about in one slide, when I talked about how do you convert this scientific advance into something that can be delivered all over the world.

这其中的工程部分就是,我曾经在一个幻灯片中讲过的,在我讲到,如何将先进的科学技术成果转化为,可以在世界范围传播的东西

耶鲁公开课 - 生物医学工程探索课程节选