名词
中文翻译：补充的中继器
同义词：
['supplemental relay', 'supplementary retransmission']
例句：
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1. The newsatellite system will provide supplementary relay capabilities to enhance the network's reliability.
新的卫星系统将提供补充中继功能，以增强网络的可靠性。
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2.The backup power supply is a supplementary relay for the main power source in case of an emergency.
备用电源是主电源在紧急情况下的补充中继。
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3. In this scenario, the primary relay failed, and the supplementary relay was able to maintain communication until help arrived.
在这个情景中，主继电器失效了，而补充中继能够维持通信直到救援到来。