So let me start off with-- is this the first day of shopping or was it yesterday?

首先我想问一下,第一次的试听课是今天还是昨天

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

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

I think last day Professor Ballinger did this one.

我想昨天巴灵格教授应该说过。

麻省理工公开课 - 固态化学导论课程节选