Qacs
(qac 的复数) abbr. quaternary ammonium compound 季铵化合物（杀菌剂）
🗣️ 情景例句
Jnice to have you with us.
很高兴你能跟我们在一起。
Don't forget to buy it for him.
不要忘记买给他。
Mum, can we have our fish and chips outside?
妈，我们可以在户外吃吗？