Yeah it goes back to a long time in my life, but most immediately to my own graduate career, which I went to several different schools.

这说来话长了，就近而言，这跟我所任职的研究生院有关，我在不同的大学任职。

普林斯顿公开课 - 人性课程节选

and then I worked in an auction house; "Christie's", for a year before applying to come back to graduate school.

在我申请研究生院之前我还在佳士得拍卖行工作了一年。

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But no matter, I spent a year in graduate school doing forensic research and working for the local Middlesex DA's office where I learned how to make a so-called forensic image of a digital camera's media card.

不过没关系，我在研究生院花了一年做法庭研究,并在那儿的Middlesex，DA的办公室工作,在那里,我学会了用数码相机的媒介卡,制作鉴识影像。

哈佛公开课 - 计算机科学课程节选