名词
中文翻译：接触轨道
同义词：
['contact line', 'contact wire', 'contact point']
例句：
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1. Thetrain's contact rail is worn smooth by the constant friction of wheels against it.
火车的接触轨由于车轮不断摩擦而变得光滑。
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2. The engineer carefully inspected the contact rail for any signs of wear or damage.
工程师仔细检查了接触轨，以查看任何磨损或损坏的迹象。
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3.The new contact rail system has significantly improved the efficiency of the power transmission.
新的接触线系统显著提高了电力传输的效率。