牛顿定律并不适合于任何情况。
因为根据牛顿定律，每个动作都有反作用力。
Because according to Newton, for every action there's an opposite reaction.
倘若我们不知道怎样应用牛顿定律，这些定律就会是一些没有意义的方程。
Newton's laws are meaningless equations until we know how to apply them.
倘若我们不知道怎样应用牛顿定律，这些定律就会是一些没有意义的方程。
Newton's laws are meaningless equations until we know how to apply them.
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