in order to generate orderly pattern of pressure generation.

从而产生有序的节律来生成血压
This is a cartoon of the cardiovascular system,

这是一幅关于心血管系统的画片
not showing the blood except by the colors here,

它并没有画出血液只是用不同颜色来指代
but showing the heart.

但画出了心脏
In the center of this diagram is the heart

这幅图的中间就是心脏
and surrounding it is sort of a schematic diagram

环绕于此的是一个示意图
like you might see for plumbing in a house

就好像房屋的铅垂线
but certainly not in anatomical detail;

当然在实际解剖位置上并不存在
this drawing isn't of how blood flows from the heart to

这张图并没有给出血液从心脏流出
all the other regions of the body.

到流至体内其它各部位的全过程
Let's just--now I know that you've seen diagrams like this before,

我们只是我知道你们看过类似的图
you understand the basic connections between things,

懂得存在于其中的基本联系