- After all, if you knew-- suppose we had the birthmarks that told you -- when you were going to die-- if you had that kind of a birthmark, you would face your entire life with the burden of knowing, I've got 48 years left, 47 years left, 50 years left.

毕竟，如果你知道-,假设我们有个胎记能告诉你,你什么时候去世-,如果你有那种胎记，你一辈子都将面对那种知情的压力，我还剩48年，还剩47年，还剩50年。

耶鲁公开课 - 死亡课程节选

It also tells you that if you compress the spring, compress it means x is now-- x is measured from this position, where the spring is neither compressed nor expanded.

它还能告诉你,如果压缩弹簧,压缩就意味着现在 x...,x 是从这个位置开始算的,在这个位置弹簧既没有压缩也没有伸长

耶鲁公开课 - 基础物理课程节选

So, the question we are going to ask is the following, "If I tell you that a particle has a constant acceleration a, can you tell me what the position x is?"

接下来要问的问题就是,如果我说某质点加速度恒为a,你能告诉我它的位移x是多少吗

耶鲁公开课 - 基础物理课程节选