名词短语
中文翻译：桥梁和隧道的升级
同义词：
['bridge upgrade', 'tunnel upgrade']
例句：
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1.The new bridge and tunnel project will greatly improve the transportation efficiency.
新的桥梁和隧道项目将大大提高交通效率。
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2. The upgrading of the bridge and tunnel is expected to reduce congestion on the road.
预计桥梁和隧道的升级将减少道路上的拥堵。
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3. The construction of the bridge and tunnel was completed ahead of schedule, which saved time and resources.
桥梁和隧道的建设提前完成，节省了时间和资源。