And I'm sure you can imagine that if you want to label onw protein green and one red and one yellow, now you can start looking at really complex biological processes.

我相信你们可以想象如果你,需要把一个蛋白质标记成绿色,一个标记红色，一个标记黄色，这样你就可以研究非常复杂的生物学过程。

麻省理工公开课 - 化学原理课程节选

But in that way I know you are closing " So if you're freshman write "one", " if you're sophomore, write down "two".

这样标记只是为了方便记住你,如果是大一新生，写上“一，大二的话，写上“二。

麻省理工公开课 - 电影哲学课程节选