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1.The construction crew was working diligently to ensure the safety of the workers during the construction of the tunnel.
施工队正努力工作以确保在隧道建设期间工人的安全。
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2. The ventilation system in the tunnel plays a crucial role in maintaining air quality and reducing noise pollution.
隧道内的通风系统在保持空气质量和减少噪音污染方面起着至关重要的作用。
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3. The construction team had to install additional ventilation equipment to ensure proper air circulationduring the excavation of the tunnel.
施工团队不得不安装额外的通风设备，以确保在挖掘隧道时空气流通正常。