Trav
abbr. 末端控制的变风量系统（Terminal Regulated Air Volume）
🗣️ 情景例句
Would you like some coffee?
要不要来点咖啡？
To chirr...chirrup...chirr
唧唧地叫
Then the teacher says, Stop and put your hands in front of you now.
“现在停止，并把手放在面前。”