Agard
abbr. 航空研究与发展顾问组（advisory group for aeronau-tical research and development）
🗣️ 情景例句
And tell me where you are and what's happened.
告诉我你在哪里，发生了什么事？
Open your book,please.
请把书打开。
How's everything?
一切还好吧？