| 单词 | Mesonychidae | 
| 释义 | Mesonychidaeplural noun  Mes·onych·i·dae   ˌme|zōˈnikəˌdē, ˌmē|, |sō-   : a family of extinct creodont carnivorous mammals from the Paleocene and Eocene of North America and Europe   | 
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