名词
中文翻译：前天线
同义词：
['front antenna', 'front-end antenna']
例句：
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1.The new device has a preantenna that can detect signals from far away.
这款新设备有一个可以探测远距离信号的前天线。
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2.In the military, the preantenna is used to communicate with other units in the area.
在军事中，前天线被用来与该地区的其他单位进行通信。
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3.The preantenna is crucial for maintaining a strong signal during long-distance communication.
前天线对于维持远距离通信中的强信号至关重要。