The exploration and utilization of underground space is becoming an important component of modern urban construction.
地下空间的开发利用已逐步成为现代大城市规划建设的重要组成部分。
Underground space is a new resource of urban construction.
地下空间是城市建设的新型国土资源。
The Development of urban Underground Space is an important content of modern urban construction and management.
城市地下空间开发利用是现代城市建设和管理的重要内容。
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