service tunnel
英
美
- 工作隧洞
双语例句
- The train will pass through a tunnel.
火车将要穿过一个隧洞。 - With the development of the tunnel and underground project construction technology, the waterproof requirement to structure is higher and higher.
摘要随着隧洞和地下工程施工技术的发展，对结构防水的要求越来越高。
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