Qac
abbr. quaternary ammonium compound 季铵化合物（杀菌剂）
🗣️ 情景例句
Rose-petal salad?
玫瑰花瓣沙拉好吗？
Soorow is at parting if at meeting there be laughter.
离别多愁恨，相见尽笑声。
Which shop?
哪个商店？