Qac
abbr. quaternary ammonium compound 季铵化合物（杀菌剂）
🗣️ 情景例句
We hope you're successful in your new post.
我们希望你在新的岗位上成功。
Bring up a raven and he'll pick out your eyes.
养虎贻患。
Visits to really remote villages are seldom enjoyable --
到真正偏僻的村庄去旅游并不是一件愉快的事情。