ra·dio /ˈrediˌo/
  無線電,收音機,無線電報,無線電廣播,無線電臺(vt.)(vi.)用無線電發送
  radio
  無線電
  radio
       adj : indicating radiation or radioactivity; "radiochemistry"
       n 1: medium for communication [syn: radiocommunication, wireless]
       2: an electronic receiver that detects and demodulates and
          amplifies transmitted signals [syn: radio receiver, receiving
          set, radio set, tuner, wireless]
       3: a communication system based on broadcasting electromagnetic
          waves [syn: wireless]
       v : transmit messages via radio waves; "he radioed for help"