名词
中文翻译：地铁工程
同义词：
['urban rail transit', 'subway engineering']
例句：
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1.The metro system is designed to improve the efficiency of urban transportation.
地铁系统旨在提高城市交通的效率。
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2. The construction of this new metro line has been a major project for the city.
这个新的地铁线路的建设是该市的一个主要项目。
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3. With the completion of the metro network, people can travel more conveniently between different parts of the city.
随着地铁网络的完成，人们可以在城市的不同部分之间更方便地旅行。