telegraph v. 打电报(tele+graph写→用电写→电报)
telegram n. 电报(tele+gram写,画)
telephone n. 电话(tele+phone声音→远方声音传过来)
telescope n. 望远镜(tele+scope看→看远方→望远镜)
television n. 电视(tele+vis看+ion→看远方→通过电看→电视)
telemeter n. 遥测仪(tele+meter测量→远测量→遥测仪)