Halon
卤化烷（常用以灭火）
🗣️ 情景例句
Thank you very much.
非常感谢。
It is too late to shut the stalbe door when the steed is stolen.
失马锁厩，为时已晚；贼去关门，为时已迟。
What is more, they will not have to rely solely on the written word.
而且，也不必完全依赖文字材料。