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新加坡耗资3亿新元复杂隧道施工方法（英文）论文简介： The proposed project comprises road tunnels, depressed roads, road improvement and widening of at-grade roads, construction of road related facilities, a facility building and all associated works, such as drains, retaining walls, covered linkways, relocation of bus stops and covered pedestrian overhead bridges (POB).
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