translation.en: The electron -- the thing that goes around the atomic nucleus -- held around in orbit, by the way, by the electromagnetic force that's carried by this thing, the photon.
translation.zh: 电子——那个绕着 原子核运动的东西—— 被制约在一个由电磁力控制的轨道上 而电磁力由这个东西携带，光子