常見例句Americans can communicate quickly with people in other countries by cable, radiotelegraph radiotelephone. 美國人可以利用海底電報、無線電報、用戶電報及無線電話和他國人民通訊，迅速便捷。lifeboat radiotelegraph installation 救生艇無線電報裝設(shè)synchronous radiotelegraph channel 同步無線電信道main radiotelegraph installation 主無線電報電臺international radiotelegraph lifecraft f 國際無線電報救生飛機頻率international radiotelegraph distress frequency 國際無線電報救險頻率 返回 radiotelegraph