名词
中文翻译：Unknown
同义词：
['double track tunnel', 'twin tunnel']
例句：
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1.The twin-track tunnel is a crucial part of the transportation system.
双轨隧道是交通系统的关键部分。
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2. The twin-track tunnel has been under construction for several years now.
双轨隧道已经建设了好几年了。
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3.The twin-track tunnel is designed to accommodate heavy traffic during peak hours.
双轨隧道设计用来在高峰时段容纳重交通。