Qac
abbr. quaternary ammonium compound 季铵化合物（杀菌剂）
🗣️ 情景例句
What place would you most like to visit?
你最想到哪个地方旅行？
She couldn't discern the very slight differences between the two.
她无法分辨双方为少的差异。
I have the quotations you asked for.
你要的报价已经做好了。