这是牛顿第三定律的意义：对于每一个作用力总是有其大小相等的反作用力。

This is the meaning of Newton's Third Law: there is always an equal reaction to every action.

youdao

这是牛顿第三定律的意义：对于每一个作用力总是有其大小相等的反作用力。

This is the meaning of Newton's Third Law: there is always an equal reaction to every action.

youdao