Qac
abbr. quaternary ammonium compound 季铵化合物（杀菌剂）
🗣️ 情景例句
so I can enjoy you all.
让我享受到你们大家的温馨。
Jeff will lose face if his friend fails to work hard.
杰夫因他的朋友不肯勤奋工作而丢了面子。
They lived there before they came to China.
在他们来中国前。