translation.en: So here you have a system, you have something -- and there’s plenty of that stuff in biology -- some substance giving an electron, and the electron tries to jump, and only when a molecule comes along that has the right vibration does the reaction happen, OK?
translation.zh: 现在你们已经了解了这个体系 要是有 生物界有很多这样的东西 要是有一些物质可以提供电子 电子想要越过间隙 只有在一个有匹配震动的分子出现时 反应才会发生