名词
中文翻译：外带信号
同义词：
['out of band', 'out-of-band', 'out-of-range例句：1. The out-of-band communication system is not secure.（这个外带通信系统不安全。）2. The out-of-band signal was too weak to be detected.（这个外带信号太弱，无法被检测到。）3. The out-of-band signal was used for emergency purposes only.（这个外带信号仅用于紧急用途。）']
例句：
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1. The out-of-band communication system is not secure.
这个外带通信系统不安全。
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2. The out-of-band signal was too weak to be detected.
这个外带信号太弱，无法被检测到。
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3. The out-of-band signal was used for emergency purposes only.
这个外带信号仅用于紧急用途。