名词
中文翻译：铁路滚轮
同义词：
['train roller', 'railway wheel']
例句：
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1.The railroad roller is used to roll the train into position.
铁路滚轮用于将火车推入位置。
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2. The railway roller was damaged during the accident.
铁路滚轮在事故中受损。
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3. The railway roller is essential for maintaining the smooth operation of the train.
铁路滚轮对于维持火车平稳运行至关重要。