短語(yǔ)詞組短語(yǔ)radiotelephone distress frequency watch receiver 無(wú)線電話遇險(xiǎn)頻率值班收信機(jī)radiotelephone distress frequency watch receive 無(wú)線電話遇險(xiǎn)頻率值班收信機(jī) 返回 radiotelephone distress frequency watch