underwater tunnel meaning in Chinese

海底遂道
水底隧道
水下隧洞

Metro and underwater tunnel in the united states
对美国几个城市地铁和水下隧道的观感
Study on key problems of underwater tunnel of taizhou highway
泰州公路过江通道隧道方案中技术问题研究
An overview of research on reasonable cover thickness for underwater tunnel by drill - blasting method
水下隧道钻爆法施工合理覆盖层厚度的研究评述
Travel through an underwater tunnel and come face to face with a large number of sharks
走进水底参观隧道，您可以面对面感受数十条深海霸主的慑人威势！

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