A dentist performs in-office treatments by coating the teeth with a bleaching agent, then using periodic flashes of light to activate the solution.
所谓诊所治疗就是牙医用漂白剂给牙齿涂层，并周期性地用闪光灯来启动解决方案。
2
Bleaching with sodium hydroxide solution, this liquid besmear in the wood surface, half an hour later, besmear again hydrogen peroxide.
用氢氧化钠溶液漂白时，将该液涂在木材表面，经半小时后，再涂上双氧水。
3
The chub mackerel filets were degreased by skinning, bleaching with complex salt solution, pressing and bleaching with potherb mustard juice successively.