It was Galileo who expressed what he called the law of inertia and I will read you his law.
伽利略在当时,提出惯性定律,他的观点是这样的。
We can, nevertheless, well imagine having done it in this, or in some similar way, based upon the application of the law of inertia.
不过,我们可以想象,无论用这种方法或用惯性定律为基础的其他类似方法,这总是能做到的。
According to the law of inertia, a body once in motion will never stop till a force compels it, nor will a body at rest start to move of its own accord.
根据惯性定律,一个物体一旦运动,在受外力作用之前永远不会停止运动;同样,一个静止的物体在受到外力之前,永远不会自行开始运动。
The point of Newton is, two things in the Law of Inertia, which one may think is trivial.
牛顿的观点是,惯性定律分两部分,可能有人觉得这种分法无关紧要
If I give you one observer for whom the Law of Inertia is true, I say that others for whom is also true.
如果知道一个人适用惯性定律,那肯定有其他一部分人也适用惯性定律
if the Law of Inertia is valid for me, it's valid for other people in the same room at rest with respect to me.
如果惯性定律对我适用,那就对这屋子里的其他和我保持相对静止的人,也同样适用
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