由于第五维度极小，只有像粒子一样的微型物体才能在上面移动。

Since this extra dimension is so small, only tiny objects, such as particles, can move along it.

youdao

我下面给大家，粒子的运动方程，即在三维空间中物体的运动，非常复杂的运动，很难想象它是如何的。

I want to write down for you equations for a moving particle a moving object in three-dimensional space very complicated motion which I can hardly imagine what it's like.

youdao

现在我们知道“量子物体”可能不需要单个粒子或光子。

We now know that "quantum objects" might not need to be single atoms or photons.

youdao