In every context in which I place a body, I'll have to know what are the forces acting on it.

每次我拿一个物体举例子时,我就得知道有哪些力作用在物体上

耶鲁公开课 - 基础物理课程节选

One way to draw sort of a schematic diagram of the operation of the human body where it shows separated organ systems and tries to show them in context.

用这种图示的方法,示意人类身体的运作方法,图中单独表示出器官系统,并试图展示它们之间的联系

耶鲁公开课 - 生物医学工程探索课程节选