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.

youdao

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.

youdao