| 单词 | sirenian mammal |
| 释义 | sirenian mammal (extremely rare) n WORD FAMILY sirenian mammal n any of two families of large herbivorous aquatic mammals with paddle-shaped tails and flipper-like forelimbs and no hind limbs Syn|Hypo|Hyper sea cow, sirenian Trichechus manatus, manatee sirenian mammal of tropical coastal waters of America; the flat tail is rounded Dugong dugon, dugongsirenian tusked mammal found from eastern Africa to Australia; the flat tail is bilobate Hydrodamalis gigas, Steller's sea cowextinct large sirenian mammal formerly found near the Asiatic coast of the Bering Sea aquatic mammal whales and dolphins; manatees and dugongs; walruses; seals |
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