I paid off as much as I could." Zahwe Samouni had little cash left and was unable to find enough construction materials, but she managed to build a two-room cinderblock house.

VOA: standard.2010.01.02

Now, one of things I left hanging is, I said, OK, you build it out of primitives.

现在，我落下的一件事情是，我说过了，好的，你在原始数字之外建造它。

麻省理工公开课 - 计算机科学及编程导论课程节选

To be systematic, I'm going to build this tree depth-first left-first.

为了保持系统性，我将要把这棵树设置,为深度优先和左边优先。

麻省理工公开课 - 计算机科学及编程导论课程节选