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单词 transponder
释义
N25502250transponderSpoken.15Fiction.71Magazine.92Newspaper.53Academic.19

transponder

/trænˈspɒndə(r)/
noun
a device for receiving a radio signal and automatically transmitting a different signal
发射机应答器; 询问机; 转发器。
词源
1940s: blend of TRANSMIT and RESPOND, + -ER1.
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