短語詞組短語Call Forwarding On 呼叫轉接打開;開啟來電轉接Call Forward on Busy 具有遇忙轉接call provision on bond 債券可隨時償還的規(guī)定call down on 祈求call time on 終止Call recording on demand 按需錄音Call back on busy 回撥繁忙;遇忙回叫 返回 call on