| 单词 | Ostracoda | 
| 释义 | Ostracodaplural noun  Os·tra·co·da    ˌästrəˈkōdə,  äˈstrakədə     : a subclass of crustacea comprising small active mostly freshwater forms having the body enclosed in a bivalve shell composed of right and left valves, the body segmentation obscured, the abdomen rudimentary, and only seven pairs of appendages    ostracodan   -dᵊn   ostracodous   -dəs   | 
	
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