any of numerous sharks of a greyish colour; esp. a requiem shark (family Carcharhinidae).
| 单词 | θ36674 | 
| 释义 | the world > animals > fish > subclass Elasmobranchii > order Pleurotremata > 			[noun]		 > family Carcharinidae > carcharinus americanus (grey shark) (1)		 grey shark1804 any of numerous sharks of a greyish colour; esp. a requiem shark (family Carcharhinidae). | 
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