Qacs
(qac 的复数) abbr. quaternary ammonium compound 季铵化合物（杀菌剂）
🗣️ 情景例句
Because the job was not challenging enough.
因为那份工作挑战性不够。
Is there any way you could bring it in to be looked at?
你有没有办法把它带过来，让我们看一看？
I'm sorry about that.
这件事我很报歉。