Qac
abbr. quaternary ammonium compound 季铵化合物（杀菌剂）
🗣️ 情景例句
I want to buy an engagement ring for my fiancée.
我想为我的未婚妻买一枚订婚戒指。
The timid child would not leave his mother's side.
那个胆小的孩子不愿离开母亲。
unlike, say, a buyer of goods, cannot complain that the law is loaded against him.
但是储户不能像货物的买主那样来抱怨法律对自己不利。