短語詞組短語CONF CONFerence calling 會議呼叫conference calling equipment 會議電話設(shè)備Conference Calling Indicator 會議呼叫指示蓡數(shù)conference calling detail 電話會議呼叫Conference Calling Supplementary Service 會議呼叫補充業(yè)務(wù) 返回 conference calling