Trav
abbr. 末端控制的变风量系统（Terminal Regulated Air Volume）
🗣️ 情景例句
Well ...
嗯……
Sorry, but I have to go. Peace!
对不起，我必须走了，祝无恙！
Can you believe that I bought a TV for $25?
你能相信吗我买一台电视只花了不起5块钱？