Qacs
(qac 的复数) abbr. quaternary ammonium compound 季铵化合物（杀菌剂）
🗣️ 情景例句
You want to play charades?
你想玩哑谜？
He was so startled that he yelled.
他惊吓得高声喊叫。
The situation is serious. Something must be done before it's too late.
形势危急。得及时采取措施。