借着拱顶肋、飞扶垛和尖拱（哥德式），使建造极高结构而尽量保持自然光的问题得以解决；

The rib vault, flying buttress, and pointed (Gothic) arch were used as solutions to the problem of building a very tall structure while preserving as much natural light as possible.

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扶垛：建筑中，自墙面凸出的砖石砌体，用以加固墙身或抵抗由拱或屋顶所产生的横向推力。

Buttress: Exterior support, usually of masonry, projecting from the face of a wall and serving to strengthen it or resist outward thrust from an arch or roof.

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