Of course, in constructing a large tunnel, many kinds of construction methods would be used at the same time. Here, what is said is the primary construction method of the main structure.
当然，作为建造大型隧道，会同时采用许多施工方法，这里说的是其主体结构的主要施工法。
Of course, in constructing a large tunnel, many kinds of construction methods would be used at the same time. Here, what is said is the primary construction method of the main structure.
当然，作为建造大型隧道，会同时采用许多施工方法，这里说的是其主体结构的主要施工法。
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