They talked about the real world that is outside, that is dirty,impure,profane versus academia, which is lofty,idealistic,sacred.

他们将外面的世界看成是现实，是肮脏的，不洁，被亵渎的，而学术界，则是崇高的，有理想的，神圣的。

哈佛公开课 - 幸福课课程节选

It goes out to the outside world, interacts,gets its hand and mind dirty, does work outside and then applies its work and learns from "the dirty experiences" and brings it back to the lab and so on and so on in an upward spiral.

而是走到外面的世界，与外界互动，接触那些“肮脏“事物，在外面工作，并吸取经验,从“肮脏经验“中学习“,将得到的经验带回实验室,诸如此类，就像一个上升的螺旋。

哈佛公开课 - 幸福课课程节选