electrophoneyoudaoicibaDictYouDict[electrophone 词源字典]
"An instrument which produces sounds in response to an electric current, e.g. from an induction coil or telephone, especially as developed to enable telephone subscribers to hear concerts, plays, public speeches, etc., in their home. Now historical", Mid 19th cent. From electro- + -phone. Compare earlier electrophonic.[electrophone etymology, electrophone origin, 英语词源]