名词
中文翻译：紧急天线
同义词：
['emergency radio', 'emergency transmitter', 'emergency antenna array']
例句：
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1. Theemergency antenna is used to receive signals from the ground during an emergency.
紧急天线用于在紧急情况下接收来自地面的信号。
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2.The emergency antenna was designed to provide a wider coverage area.
紧急天线被设计为提供更广泛的覆盖区域。
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3. The emergency antenna was installed in the center of the roof to ensure maximum signal transmission.
紧急天线安装在屋顶的中心，以确保信号的最大传输。