Any of the possible gear ratios of a machine, esp. a bicycle or motor vehicle; the equipment associated with this; = gear, n. 7b.
| 单词 | θ214375 | 
| 释义 | society > occupation and work > equipment > machine > parts of machines > wheel > 			[noun]		 > cog or gear > which allows change of speed or direction > ratio of (1)		 speed1866 Any of the possible gear ratios of a machine, esp. a bicycle or motor vehicle; the equipment associated with this; = gear, n. 7b.  | 
	
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