ra·dio·phone /ˈrediəˌfon/
無線電話,光線電話機
Ra·di·o·phone n.
1. Physics An apparatus for the production of sound by the action of luminous or thermal rays. It is essentially the same as the photophone.
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radiophone
n : a telephone that communicates by radio waves rather than
along cables [syn: radiotelephone, wireless telephone]