noun🔗Share应答器，转发器 A radio or radar transceiver that transmits some signal in response to receiving a predetermined signal"The airplane's transponder automatically sent its location back to air traffic control whenever it received a radar signal. "飞机的应答器在收到雷达信号时，会自动将飞机的位置信息发回给空中交通管制中心。technologyelectronicscommunicationdevicesignalmachineChat with AIVocabulary GamePractice Reading
