But by looking at the stages, we pick out a space-time worm that makes up a person.

但看着这个阶段，我们联想到组成那个人的,时空虫。

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but you can sort of tell that the particle is moving slowly or rapidly by looking at the space in between these tick marks.

但你可以通过观察计时点之间的距离,来判断该物体运动的快慢

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