当潜在运动（动因）变成实际运动（实动），即为运动。

Only an actual motion can convert a potential motion into an actual motion.

youdao

目前常用的几种间隙模型都存在一定的不足，不完全符合实际运动。

These kinds of passing model can not exactly coincide with the actual motion.

youdao

初步的测试表明，介质实际运动轨迹与修正后的模型有更好的吻合。

The initial testing shows that there is a better coincidence between the real motion orbit and the modified model.

youdao

You simply want to describe things the way they are and then dynamics tells you how they changed and why they changed.

你只是单纯描述物体的实际状态,而动力学则是解释它们运动的方式和原因的

耶鲁公开课 - 基础物理课程节选

Now here, they weren't estimating the calories they were just doing reports of how much physical activity they got and then the investigators calculated the calories and then the graph was created here.

说一下,实验对象没有实际估测卡路里,他们只是将运动量汇报给研究者,然后研究者进行计算,研究者绘制了这表格

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

It's the actual motion of the particle.

这是质点的实际运动路线

耶鲁公开课 - 基础物理课程节选