This reaction includes old bondbreaking, new bond forming and electron transferring between molecules.
此反应包括旧键断裂，新键生成以及分子间的电子转移。
2
If you get some of these in the upper atmosphere, a photon, an ultraviolet photon, has the energy capable of breaking this bond.
如果你把它放到大气层上，一个光子，一个紫外光光子，有能量可以破坏它的化学键。
3
In other words, they flipped a switch, which allowed them to change the electrical conductivity of the silicon without making or breaking a single chemical bond within the surface.