| 单词 | Cardiidae | 
| 释义 | Cardiidaeplural noun  Car·di·i·dae   kärˈdīəˌdē   : a family of marine bivalve mollusks (order Eulamellibranchia) that have an equivalve ribbed shell with prominent umbones, a large foot adapted for creeping over sandy bottoms, and much-folded gills and that include the true cockles   | 
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