| 单词 | Actinopterygii | 
| 释义 | Actinopterygii [´ak·tǝ´näp·tǝ`rij·ē´ī]  VERTEBRATE ZOOLOGY The ray-fin fishes, a subclass of the Osteichthyes distinguished by the structure of the paired fins, which are supported by dermal rays.  | 
	
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