Smilodon, is an extinct genus of machairodont felid. It is perhaps one of the most famous prehistoric mammals, and the best known saber-toothed cat.
剑齿虎，是已经灭绝的剑形齿类动物的一种，这也许是史前哺乳动物中最出名的一种了，也是最有名的剑齿类猫科动物。
In fact, at the Gray Fossil Site, bones from a saber-toothed cat, camel, elephant and rhinoceros indicate these animals lived in the Volunteer State more than 4 million years ago.
事实上，灰化石遗址（Gray Fossil Site）里犬齿猫科动物、骆驼、大象和犀牛的骨头表明这些动物生活于400多万年前的志愿者州（Volunteer State，即田纳西州）。
What 's more dangerous than meeting one saber toothed cat?
还有什么比遇上一群剑齿猫更加危险的呢？
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