Prof. BLATCHLEY: So there are peroxide chemicals that are used in addition to chlorine, and that's usually how they're added.
教授布拉·奇利：除了使用氯，那里也有过氧化物的化学品，这就是他们通常添加的。
2
During the final stage, the water is disinfected - by the addition of chlorine, hydrogen peroxide and other chemicals and by running it past ultraviolet lights.
在最后一个步骤中，水经过氯、过氧化氢和其它化学品消毒，并且经过紫外线灯消毒。
3
Chlorine sodium hypochlorite calcium hypochlorite and hydrogen peroxide are commonly used as bleaches.