I'm hot, compared to the air of the room, or cold if I'm somewhere that's warm.

我相对于室内的空气是热的，或是冷的如果我呆在一个温暖的地方。

麻省理工公开课 - 热力学与动力学课程节选

And so what I'm really doing is inviting you to take a good, cold, hard look at death, and to face it and think about it in a way that most of us don't do.

那就是我要你们做的，认清，死亡的好和坏，面对它，然后思考它,用我们从没用过的方式。

耶鲁公开课 - 死亡课程节选