Trais
abbr. Transportation Research Activity Information Service (Department of Transportation) 交通研究活动信息服务（交通部）
🗣️ 情景例句
That's very nice of you, but I really can't.
你太客气了，可我真的非走不可。
The passengers were scared to death as the taxi whizzed along.
出租车风驰电掣般地驶着，乘客吓得要命。
so vast is the number of planets,
但是行星的数目是那么庞大，