constant of the motion的意思|示意

Owing to their position on the surface of the heart, the coronary arteriesare in constant motion.

由于位于心脏的表面，冠状动脉一直不断地在运动。

I now would like to write down, in most general form the equation for the position and the velocity as a function of time for a one-dimensional motion whereby the acceleration is constant.

我来把更一般的形式，写出来吧，在一维空间中，位置和速度，作为时间函数的，一般形式，这里的加速度是一个常数。

Not only do the inhabitants of this beautiful region love spending time outdoors, they are in constant motion with farming and hiking and spending time with family and friends.

这一美丽的地区的居民不仅喜欢花时间在户外，他们也不断从事农业和爬山活动，与家人和朋友共度美好时光。