So, we are going to specialize to a very limited class of problems in the rest of this class.

在接下来的时间里,我们会专门研究,一类非常有限的问题

耶鲁公开课 - 基础物理课程节选

Of course, you have allowed it to move a finite distance in a finite time.

你是让它在有限的时间内移动有限的距离

耶鲁公开课 - 基础物理课程节选