And so, you know from your Newtonian mechanics, as you were learning in 8.01, the dynamic force here mv^2/r is mv squared over r.

在8。01节对牛顿动力学系统的学习中，我们可以知道这里的运动受力,就是。

麻省理工公开课 - 固态化学导论课程节选

So if you were learning rhetoric, for example, you might practice giving speeches at the gymnasium.

如果你在学习修辞学，就可以在运动场通过演讲来练习。

耶鲁公开课 - 新约课程节选