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
Here is a copy of all the things we need to start with.
这是我们一开始就需要的所有东西的清单。
Elbow grease gives the best polish.
只要功夫深，铁杵磨成针。
On which ones?
哪几个品目呢，