名词
中文翻译：无线电沟渠
同义词：
['radio channel', 'radio tunnel']
例句：
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1.The radio canal is a crucial link in the communication system.
无线电沟渠是通信系统中至关重要的一环。
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2. The engineers had to dig a new radio canal to bypass the old one.
工程师们不得不挖掘一条新的无线电沟渠来绕过旧的。
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3.The construction of the radio canal has been completed, and it will be used for international communication.
无线电沟渠的建设已经完成，它将用于国际通信。