Qac
abbr. quaternary ammonium compound 季铵化合物（杀菌剂）
🗣️ 情景例句
until I have a chance to talk with you about it.
除非我有机会跟你谈过。
Kinsman helps kinsman,but woe to him that hath nothing.
亲人帮亲人，无亲来帮愁煞人。
That reminds me.
那可提醒我了。