telephony

n [U] process of transmitting sound by telephone 电话通讯; 电话技术.

telegraphic, telegraphically, telegraphist, telegraphy, telemetry, teleological, teleologist, teleology, telepath, telepathic, telepathically, telepathy, telephone, telephone (also phone), telephone exchange (also exchange), telephone number (also `phone number), telephone operator, telephone to sb., telephonic, telephonist, telephoto, telephoto lens, telephotographic, telephotography, teleprinter, teleprompter, telescope, telescopic, telescopically, teletext, teletypewriter, televise, television, television show, television/TV, telex, tell, tell about, tell on, tell sb. of about,