| 单词 | bottom bracket | 
| 释义 | Definition of bottom bracket in English:bottom bracketnoun 
 OriginLate 19th century; earliest use found in Viscount Bury (1832–1894), politician. Definition of bottom bracket in US English:bottom bracketnoun 
 OriginLate 19th century; earliest use found in Viscount Bury (1832–1894), politician.  | 
	
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