OK, well.I'll try to explain this, This is a picture that was taken about 50 years ago.

好吧，我试着来解释一下，这张图片大概是50年前拍的。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

That slide is on your--is in the slides that are distributed if you want to follow on that website, there's the picture that I copied yesterday.

在发给你们的幻灯片里,如果你想在那个网站上做深入了解,这是我昨天从网站上拷贝下来的一张图片

耶鲁公开课 - 生物医学工程探索课程节选

This is another familiar picture, I purposely picked one that looked sort of old fashioned compared to the usual way you see this, which might be on the nightly news.

这是另一幅熟悉的图片,我有意选择了,与你们通常在晚间新闻见到的那种相比,看上去,比较老式的设备

耶鲁公开课 - 生物医学工程探索课程节选