In the middle Eocene formations of North America occurs the more specialized Uintatherium (or Dinoceras), typifying the family Uintatheriidae.是什么意思_In the middle Eocene formations of North America occurs the more specialized Uintatherium (or Dinoceras), typifying the family Uintatheriidae.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句