名词中文翻译
中文翻译：上轨道轮
同义词：
['upper rail', "upper wheel例句：1. The train's upper track wheel is worn out.（火车的上轨道轮磨损了。）"]
例句：
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1. The train's upper track wheel is worn out.
火车的上轨道轮磨损了。
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2. The engineer inspected the upper track wheel for signs of wear.
工程师检查了上轨道轮是否有磨损的迹象。
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3. The new design uses a more efficient upper track wheel system.
新设计采用了更高效的上轨道轮系统。