Qacs
(qac 的复数) abbr. quaternary ammonium compound 季铵化合物（杀菌剂）
🗣️ 情景例句
I want to leave the phone number of the restaurant....
我要留餐厅的电话号码给她。
How fast?
多快？
She was thinking that she must reprimand her home help the next morning for such a monstrous piece of negligence,
她心想明天上午一定要好好训斥那个干家务的帮手，她竟如此疏忽大意。