translation.en: These processes are too small to be seen directly, even with the best microscopes, so animations like this provide a really powerful way of visualizing a hypothesis.
translation.zh: 这些过程太小了以至于无法看到, 即使是用最好的显微镜, 因此，像这样的动画就提供了一个强大的工具 把一个假说可视化。