犀牛, 这种虽不美丽但独特的动物, 已存活繁衍了五千万年.For 50 million years, the rhinoceros, that unbeautiful but unique beast, has survived.他们发现动物身上有阑尾这个器官大概已经8千万年了.They found that animals have appendixes for about 80 million years.爱你一辈子(爱你千万年)....