名词
中文翻译：铁路轨距的扩大
同义词：
['railway gauge', 'railway track width', 'railway spacing']
例句：
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1.The new railway line is designed to accommodate larger freight trains.
新铁路线设计用于容纳大型货运列车。
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2.The expansion of the railway network has greatly improved transportation efficiency.
铁路网络的扩展极大地提高了运输效率。
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3. The engineers are working on a plan to enlarge the railway gauge to accommodate more passengers.
工程师们正在制定一个计划，以扩大铁路轨距来容纳更多的乘客。