Well, a lot of it has to do with a principle of chemistry known as partial pressure.

这在很大程度上与一种叫做分压的化学原理有关。

As principles of chemistry go, few figure more prominently in the popular imagination than radioactivity, but at the same time few are as completely misunderstood.

随着化学原理的发展， 在大众的想象中， 没有什么比放射性更突出，但同时也很少有人被完全误解。