Until they stop, both of them stop doing that, there is not going to be any peace in Afghnastan.

如果他们两方不停止，阿富汗就不会有和平。

普林斯顿公开课 - 国际座谈会课程节选

They are just encouraging each other and I stop doing before work in morning, the paper pencil kind of activity because I saw them going right to the computer, and I say,hey, they're learning more from than when they are just from the revision.

他们在相互鼓励,我现在不用在早上，做那些纸和铅笔的活动了,因为我看到他们径直走到电脑那，我想，他们能从那学到的,比从复习中学到的要多。

麻省理工公开课 - 媒体、教育、市场课程节选