这个负号，提醒你们这物体，是远离你们的。

And the minus, then, reminds you that the object is receding from you.

youdao

这物体已不再循环运动。

The object is no longer in cyclic motion.

youdao

这物体已不再循环运动。

The object is no longer in cyclical motion.

youdao

In fact, it has to be some finite number, which is the acceleration of either of these two guys.

事实上它必须是有限的数值,也就是这两个物体某中某一个的加速度

耶鲁公开课 - 基础物理课程节选

You start here and you fire a projectile It's going to go up and it's going to come down.

从这开始,你抛出一个物体,它将上升至一定高度然后落下

耶鲁公开课 - 基础物理课程节选

If two object are in the same temperature, and two other object are in the same temperature, then all three must have the same temperature.

如果有两个物体的温度相同，又有另外两个物体的温度相同，那么这三个物体一定有同样的温度。

麻省理工公开课 - 热力学与动力学课程节选