He verbally described his solution: a dome within a dome, octagonal in shape, capped by a lantern to let in light, all of which would be constructed without scaffolding.

他口头描述了他的设计方案：在穹顶内嵌入一个八角形穹顶，上面开个天窗以保持光线充足，所有过程无须要一个脚手架。

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His greatest achievement is the octagonal ribbed dome of the Florence cathedral.

其杰作是佛罗伦萨大教堂的八边形肋骨穹隆。

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The Selimiye Mosque, in Edirne, a city in northwest Turkey, is a magnificent stone edifice, with four minarets and an austere, octagonal-shaped body supporting a large dome.

NEWYORKER: The Next Crusade