All facilities are of adequate size, construction, and design for their intended use.
所有设施有足够的大小，结构，设计成预期的用途。
Small size tunnel driving is a construction technology of underground piping without excavation.
小型隧道掘进是一种无需开挖的地下管道施工技术。
Small size tunnel driving is a construction technology of underground piping without excavation.
小型隧道掘进是一种无需开挖的地下管道施工技术。
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