People have argued over the authenticity of them, although I think by now it is established that they are his.

虽然人们曾质疑其真假，但我想现在应该尘埃落定,确定是他亲笔所写。

耶鲁公开课 - 政治哲学导论课程节选

At any rate, I don't know for certainty that I'm a harder grader, but I believe that it's the case based on reactions I get when I give the speech that I'm about to give.

不管怎么，虽然不是特确定我评分严格，但相信应该就是这样,根据我每次说这些话时得到的反应来说。

耶鲁公开课 - 死亡课程节选

By the way, I didn't tell you this but I think you know that I picked my origin to be here and measured y positively to be upwards and I called that 15 meters.

顺便说一下,虽然我没明确指出,但我想你们应该都知道,我把原点取在这里,并规定y的正方向朝上,我设把这里的高度为15米

耶鲁公开课 - 基础物理课程节选