几秒钟之内，在四周人群的一片尖叫声中，她将会以让轮胎冒烟的速度，表演"面包圈"旋转，以及手刹过弯。

In a few seconds she will be screeching around vicious corners at speeds that send up smoke from the tires, performing “doughnut” spins and hand-brake turns.

youdao

同样，OCO也会研究太阳反射光线中的二氧化碳和氧气特征光谱，它将于705公里的上空以99分钟绕地球一圈的速度飞行。

OCO will similarly study carbon dioxide and also oxygen signatures in reflected sunlight. It will fly at an average altitude of 705km and orbit the Earth about every 99 minutes.

youdao

线速度，在这个例子里，就是速率，是这个圆环的周长，除以走一圈，需要的秒数。

And that linear velocity, which, in this case, is really your speed, is of course the circumference of the circle divided by how many seconds it takes to go around.

youdao

One way is to say, if I do a full revolution, I think of the speed as a distance over time.

一种方法是,如果我转完整的一圈,我认为速度就是距离除以时间

耶鲁公开课 - 基础物理课程节选