但是这个工作使人担心变暖的土地可能导致铁路路面拱起。

But the work raises concerns that the warming ground could lead to a buckling of the railway.

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弯曲的水泥墙和地板向外拱起，使双曲型的外壳结构得以完整。

The curved concrete walls and floors arch up and outward, deriving their structural integrity from their shell-like double curvature.

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