名词
中文翻译：机械轨道更换同义词
同义词：
['mechanical track replacement', 'mechanical track replacement', 'mechanical track renewal']
例句：
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1. The old railway tracks were replaced with new ones to improve safety.
为了提高安全性，旧铁路轨道被新轨道取代。
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2. The maintenance crew is responsible for the mechanical track renewal.
维护团队负责机械轨道的更换工作。
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3. The company has a policy of regular mechanical track renewal to ensure smooth operation.
公司有定期进行机械轨道更换的政策，以确保运行顺畅。