translation.en: The control of a laser is so precise that you can perform surgery inside of an eye, you can use it to store massive amounts of data, and you can use it for this beautiful experiment that my friend was struggling to explain.
translation.zh: 激光的控制之精准 可用以在眼中做手术， 也可以用来储存大量数据， 也可以用来做这项伟大的实验 就是当时我朋友绞尽脑汁给我解释的实验。