shíyàn / zhōng / jiārù / yǎnghuàjì / hòu / róngyè / de / yánsè / hěnkuài / fāshēng / le / biànhuà

实验中加入氧化剂后，溶液的颜色很快发生了变化。

After an oxidizing agent was added during the experiment, the color of the solution changed quickly.