1.
The study of movement as a consequence of known or assumed forces.
也就是研究受力物体运动的运动力学。
2.
A body can move uniformly and in a straight line, there being no cause to change that motion.
如果没有改变物体运动的原因，那么物体将作匀速直线运动。
3.
It is only how fast an object moves that its speed indicates.
物体的速度所表示的，只是物体运动的快慢。
4.
Impetus of a physical object in motion.
冲力运动中物体的动力
5.
temporal resolution of moving objects
运动物体的瞬时清晰度
6.
He force keeps the body moving in a circle.
力使物体做圆周运动。
7.
The natural motion of heavenly objects is circular.
天上的物体的自然运动是圆周运动。
8.
An object, once in motion, will keep on moving because of its inertia.
物体一旦运动，就会因惯性而持续运动。
9.
The Body Motion on the Inclined Plane in the Non-inertial System;
在非惯性系中物体沿运动斜面的运动
10.
the motion of one object relative to another.
一物体相对于另一物体的运动。
11.
On Seeking Material Benefit Sports --Discussing the importance of humanistic sports;
论物化的体育运动——谈体育运动要以人为本
12.
Moving things always travel in straight lines,
移动的物体总是沿直线做匀速运动，
13.
(of a moving object)stop moving
（指运动中的物体）停止移动
14.
Of or relating to energy or to objects in motion.
动态的与运动中的能量或物体有关的
15.
the phenomenon of resistance to motion through a fluid.
物体在流体中运动受到阻力的现象。
16.
"Once a body is set to move, it moves forever. "
一个物体一旦使之运动,就会永远运动不止
17.
Once a body is set to move, it move forever.
一个物体一旦使之运动，就会永远运动不止。
18.
The tendency of a body in motion to continue in motion along a straight line is known as inertia.
运动物体继续作直线运动的倾向叫惯性。