Qacs
(qac 的复数) abbr. quaternary ammonium compound 季铵化合物（杀菌剂）
🗣️ 情景例句
What a wonderful morning!
多么美好的早晨！
Experience is the best teacher.
经验是良师。
We can't split open a case to fill your order.
因为我们不能拆箱来凑足你的订量。