| 单词 | Xyphophorus helleri |
| 释义 | Xyphophorus helleri (extremely rare) n WORD FAMILY Xyphophorus helleri n freshwater fish of Central America having a long swordlike tail; popular aquarium fish Syn|Hyper helleri, swordtail, topminnow cyprinodont any member of the family Cyprinodontidae |
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