动量守恒定律可以取代牛顿第三定律。

The law of momentum conservation could supplant Newton's third law.

youdao

设物体遵从牛顿第三定律。

We assume that the bodies obey Newton's third law.

youdao

这就是牛顿第三定律，当然，撼动地球的力，小得难以察觉。

That is the consequence of Newton's Third Law even though the amount by which the earth moves is, of course, too small to be measured.

youdao

Now, I'll give you the third law.

下面我来讲牛顿第三定律

耶鲁公开课 - 基础物理课程节选

We'll give it a name, but by linking that T to that T, we can also figure out the same T must be exerted on this one by Newton's third law, because if this block is the only one that could be pulling this rope with T.

我们先给它命个名,把这个 T 和那个 T 联系起来,利用牛顿第三定律,我们可以知道这个 T 也一定作用在这个物体上,因为如果这个物体是唯一,受到绳子拉力 T 的物体

耶鲁公开课 - 基础物理课程节选