Designers envision building the skybridges at the saddle and then using a jacking mechanism to hoist them into place.
建筑设计师们设想先在地基上建造天桥，然后再用机械将其吊到预定高度。
Designers envision building the skybridges at the saddle and then using a jacking mechanism to hoist them into place.
建筑设计师们设想先在地基上建造天桥，然后再用机械将其吊到预定高度。
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