| 单词 | rough arch | 
| 释义 | Definition of rough arch in English:rough archnoun Architecture Building 
 OriginLate 17th century; earliest use found in Christopher Wren (1632–1723), architect, mathematician, and astronomer. Definition of rough arch in US English:rough archnoun Architecture Building 
 OriginLate 17th century; earliest use found in Christopher Wren (1632–1723), architect, mathematician, and astronomer.  | 
	
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