Qac
abbr. quaternary ammonium compound 季铵化合物（杀菌剂）
🗣️ 情景例句
That's too rich for my blood.
对我来说太贵了。
Welcome to our factory.
欢迎到我们工厂来。
Did she learn all by herself? How clever.
她全是自己学会的吗？多么聪明啊！