They may have gone, along with mammoths, short-headed bears, ground sloths and camels, because a comet exploded over their heads. 他们可能已经同猛犸象、短头熊、地獭和骆驼一起灭绝了。因为一颗彗星就在他们头上爆炸。
Sloths are medium-sized mammals that live in Central and South America. 树懒是一种生活在中南美洲的中等体型哺乳动物。
Ahnost a million years ago, saber tooth tigers, giant sloths and other monsters stumbled into the pits where they were preserved forever in the sticky tar. 大约一百万年以前,长着剑齿的老虎、巨大的懒猴和其他庞然大物突然跌进坑内,它们在粘胶似的沥青里被永久保存了下来。
Mummies of pleistocene ground sloths, with original skin, hair, tendons and claws have been found. 还发现了保存原有皮肤,毛发,腱和爪的更新世时期地面树懒的木乃伊。
Many animals are illegal to own as pets, including snails, sloths, and elephants. 许多动物包括蜗牛、树懒和象被养做宠物是违法。
Order of mammals having few or no teeth including: New World anteaters; sloths; armadillos. 牙齿很少或没有牙齿的哺乳动物;包含北美食蚁动物;树獭;犰狳。
Even though it might seem that sloths are just lazy, moving so little gives them a lot of advantages. 即使树獭看起来很懒散,行动迟缓也给了们不少好处。