We have 266 ping-pong balls, and we need someone, hopefully you, to be some radioactive material that are going to be emitting these ping-pong balls. And when the time comes, in just a minute, I'll ask the TAs to come down and hand these out very quickly to you, so we can do this experiment.

你们有些人那天，看到我在办公室数乒乓球，我们需要几个人,希望是你,来作为放射材料，放射这些乒乓球,等会我会让助教,把这些球发给你们。

麻省理工公开课 - 化学原理课程节选

And I still have that question So that's something that kind of troubles me I had not seen the Afghan National Army as being national as much as I wanna it to be Yeah. Therefore when the time comes they may not do what President Karzai wants them to do?

我始终没搞清楚这个问题,这个问题一直困扰着我,我没有看到过阿富汗国防部队,如我所期待的那样具有民族意识,所以如果在危难时刻,他们有可能不听从卡尔扎伊的指挥？

普林斯顿公开课 - 国际座谈会课程节选