The ground floor is made of reinforced concrete and is slightly smaller than the floors above.

一层由钢筋混凝土构成，比上面的各层要稍微小些。

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The ground floor space is dark and moody, with light coming from circular cuts in the concrete ceiling.

地下空间是黑暗和低沉的，来自圆孔的光线在混凝土的天花板上被削减。

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The lower ground floor of the building consists of reinforced concrete and is partly covered by the site's natural slope.

建筑的地下层由钢筋混凝土结构以及部分由场地的自然坡度覆盖形成。

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The screen stops well above the sidewalk, revealing V-shaped concrete supports and a glass-walled ground floor with views of a double-height sunken gallery inside.

WSJ: Cooper Union's New Building, at 41 Cooper Square | By WSJ Architecture Critic Ada Louis Huxtable