beeper的复数形式怎么拼写？

His beeper sounded and he picked up the telephone.他的寻呼机响了，于是他拿起了电话。I sometimes beep her on her beeper. We're really lucky.也可以呼她的BP机. 我们真的很幸运.It was 11 o'clock when the beeper went off.11点时,蜂鸣器声音没了....

n.能发出哔哔声音的仪器...

beeper的音标：beeper的英式发音音标为：['bi:pə(r)]beeper的美式发音音标为：['bipɚ]...