Halon
卤化烷（常用以灭火）
🗣️ 情景例句
He's busy preparing for class.
他忙着准备功课。
Opportunity, sooner or later, comes to all who work and wish.
只要努力工作而有志向，机会迟早终会来临。
Hurry up, Sam!The kettle's boiling!
快，萨姆。水开了！