名词
中文翻译：无线电
同义词：
['radio', 'radio station', 'broadcast', 'transmitter']
例句：
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1. She enjoys listening to the radio for relaxation.
她喜欢在收音机前放松。
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2. The radio station plays classical music every evening.
这个电台每晚播放古典音乐。
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3. The transmitter sends signals across the airwaves.
发射器通过空中波传输信号。