It says it has detained the refugees because it wants to screen them to weed out former rebels, and to demine villages where battles had raged.

VOA: standard.2009.10.23

We're not using them to weed you out, we're using them to help you learn.

我们不会用他们来淘汰你们，而是用他们来帮助你们学习。

麻省理工公开课 - 计算机科学及编程导论课程节选