| 单词 | Smiledon californicus |
| 释义 | Smiledon californicus (extremely rare) n WORD FAMILY Smiledon californicus n North American sabertooth; culmination of sabertooth development Hyper saber-toothed tiger, sabertooth any of many extinct cats of the Old and New Worlds having long swordlike upper canine teeth; from the Oligocene through the Pleistocene |
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