Rfa
abbr. request for applications 应用要求; radio frequency authorization 无线电频率授权; radio frequency attenuator 无线电频率衰减器; request further airways 要求更远的航线
🗣️ 情景例句
Two hours from now.
从现在起两小时。
It's incredible.
难以置信！
Will you come through to the back, please?
请跟我到后面去。……你何不试试这套呢？