It's a picture of cells actually growing and moving in cell culture.

这幅图是真实细胞,在细胞培养液中生长和运动的样子

耶鲁公开课 - 生物医学工程探索课程节选

If you think of two towns down here, Brive,b-r-i-v-e,famous for its rugby, and Tulle,t-u-l-l-e,which is a capital.

如果你可以想起来这儿的两个城镇,布瑞福,b-r-i-v-e,以英式橄榄球运动而负有盛名,图勒,t-u-l-l-e,是一个省的首府

耶鲁公开课 - 1871年后的法国课程节选

So what I've said so far is, a particle moving in time from point to point can be represented by a graph, x versus t.

到目前为止,我说过,一个质点随时间的连续运动,可以用一幅x-t图来表示

耶鲁公开课 - 基础物理课程节选

So what we would like to do is to describe what the object does by drawing a graph of time versus space and the graph would be something like this.

然后我们要做的就是描述这个物体的运动,通过画一个"x-t"图,画出来的图就像这样

耶鲁公开课 - 基础物理课程节选