What's shown in this diagram is the progress of the developing embryo as it travels in time, down the fallopian tube.

这张图上显示的,就是胚胎发育的过程,是按照它在输卵管中移动的时间排序的

耶鲁公开课 - 生物医学工程探索课程节选

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