Qac
abbr. quaternary ammonium compound 季铵化合物（杀菌剂）
🗣️ 情景例句
If the fact is published, it will ruin your reputaiton.
一旦公布事实真想就会毁了你的名誉。
Kindness is the golden chain by which society is bound together.
善良是连结社会的金链。
A lot of things can change over twenty-one years.
21年了，许多东西都可能改变的。