Qacs
(qac 的复数) abbr. quaternary ammonium compound 季铵化合物（杀菌剂）
🗣️ 情景例句
Excuse me, I just wanted to compliment you on the stunning decor.
不好意思，我只是想赞美一下你那了不起的装饰布置。
Wealth is not his who has it, but his who enjoys it.
财富并不属于拥有的人，而是属于享用的人。
It was half past four. Everything was ready.
一切都准备好。