Trav
abbr. 末端控制的变风量系统（Terminal Regulated Air Volume）
🗣️ 情景例句
Oh, yes, I think we'd like that very much.
噢 ，好的， 我想我们非常乐意。
I met one of the newscasters over at the television station.
我在电视公司遇到一位新闻播音员。
These friendly dogs, which were first brought from Asia, were used as watchdogs even in Roman times.
那些最先从亚洲引进的狗，待人友好，早在罗马时代就给人当看门狗了。