Trav
abbr. 末端控制的变风量系统（Terminal Regulated Air Volume）
🗣️ 情景例句
Sure.
当然可以。
Jean's mother warned her that men would try to take advantage of her.
琼的母亲警告她，男人会占她的便宜。
It is no use learning without thinking.
学而不思则惘。