trephone

例句：

1. 1. She dialed thenumber to reach her friend.
   她拨打那个号码来联系她的朋友。
2. 2. Thetrephone was a revolutionaryinvention in the early days oftelecommunications.
   电话是电信初期的一项革命性发明。
3. 3. He used histrephone to call for help duringa power outage.
   他在停电时用他的电话求助。