n.打電話的人；來訪者；呼叫者
The telephonist asked the caller to hold on while she connected him. 話務(wù)員要打電話的人別掛斷電話，她替他接通電話。
The priest is a rugelar caller. 這位神父經(jīng)常來訪。
The voice of the caller alerted her. 呼喚者的聲音使她警覺起來。
