名词
中文翻译：Unknown
同义词：
['track mileage', 'track length', 'track distance']
例句：
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1. The train's rail mileage is 500 kilometers.
这列火车的铁路里程是500公里。
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2.The new bridge will increase the city's rail mileage by 10%.
这座新桥将增加城市的铁路里程10%。
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3. The railway system in this area has a total rail mileage of 10,000 kilometers.
该地区的铁路系统总里程为10,000公里。