名词
中文翻译：铁路线
同义词：
['track', 'railway', 'rail']
例句：
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1.The railway line runs through the city center.
这条铁路线穿过市中心。
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2. The engineer carefully checked the railway line before starting work.
工程师在开始工作前仔细检查了铁路线。
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3.The trains on this railway line are scheduled to arrive at their destinations in three hours.
这条铁路线上的火车预计三小时后到达各自的目的地。