退刀到(距離)退刀距離rtreal-time transport protocol: 實時傳送協(xié)議rtrapid transport protocol: 快速傳送協(xié)議rtreverberation time: 混響時間rtr request to receive: 請求接收rtri real time record interpreter: 實時記錄注釋器下載手機詞典可隨時隨地查詞查翻譯