So 1.1 times 10 to the -31 meters is not, in fact, a significant number when we're comparing it, for example, to the length of a ball, or the size of the baseball field.

所以1，1乘以10的负31次方米，事实上并不是一个很重要的数字，举例来说，当它与一个球的长度，或者一块棒球场地对比时。

麻省理工公开课 - 化学原理课程节选

It's a little bit easier to pull the ball hard then it is to hit the ball to the opposite field. Yes?

从另一侧击球的话,更容易打出大力球,你还有什么想法

耶鲁公开课 - 博弈论课程节选