| 单词 | Peracarida | 
| 释义 | Peracarida [´per·ǝ`kar·ǝ·dǝ]  INVERTEBRATE ZOOLOGY A superorder of the Eumalacostraca; these crustaceans have the first thoracic segment united with the head, the cephalothorax usually larger than the abdomen, and some thoracic segments free from the carapace.  | 
	
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