They are below the line of poverty. And it is very easy to recruit people.

VOA: standard.2009.03.26

So an easy thing to do in planar geometry is I want to make a line segment.

在平面几何里比较容易的一件事,就是做一个线段。

麻省理工公开课 - 计算机科学及编程导论课程节选

So an easy thing to do in planar geometry is I want to make a line segment.

在平面几何里比较容易的一件事,就是做一个线段。

麻省理工公开课 - 计算机科学及编程导论课程节选