So ever since then and when I came back to Princeton, then we formed a center to study those problems.

所以从那以后，在我回到普林斯顿大学时，我们组成了一个中心研习这些问题。

普林斯顿公开课 - 人性课程节选

Having done that, it goes back up and picks the second sub-list, which came from there. It's a down to base case, merges it.

就是从那里得来的,完成这些后,回到上一步。

麻省理工公开课 - 计算机科学及编程导论课程节选

And finally going from four back to one.

最后从第四点回到第一点。

麻省理工公开课 - 热力学与动力学课程节选

Let's go back and look at it from an energetic standpoint.

我们回到刚才的地方,从热力学的角度来研究。

麻省理工公开课 - 固态化学导论课程节选