Then, you've got to say, "What do I have to know about this object at the initial time?

然后,也许你会问,我需要知道物体初始状态的哪些信息呢

耶鲁公开课 - 基础物理课程节选

By the way, when I say there's 10 Newtons acting this way, you might say, "What about gravity? What about the table?"

顺便提一下我说有 10 牛的作用力,你也许会问,"那重力呢,桌子对它的力呢"

耶鲁公开课 - 基础物理课程节选

Now, you might say, "I could be a poet and what does that have to do with finance?"

也许你会问,我想做个诗人,这跟金融有关系吗

耶鲁公开课 - 金融市场课程节选