adv.祖先地

Any of various equine mammals, such as the wild Asian species E. przewalskii or certain extinct forms related ancestrally to the modern horse. 马科动物马科的动物，例如野生亚洲种蒙古野马或者是某些与现代马有祖先关系的已灭绝的马种

Any of various equine mammals,such as the wild Asian species E.przewalskii or certain extinct forms related ancestrally to the modern horse. 马科动物马科的动物，例如野生亚洲种蒙古野马或者是某些与现代马有祖先关系的已灭绝的马种

BIOGRAPHICAL SUMMARY OF THE AUTHORGuo Xinmin, pen name: Gongmin, Shending and nickname: Ningwu Guanren, was ancestrally originated from Shenchi County, Shanxi. 郭新民，笔名公民、神丁，号宁武关人，祖籍山西省神池县，当代诗人。

A small, herbivorous, extinct mammal of the genus Hyracotherium(or Eohippus)from the Eocene Epoch of the western United States, having four - toed front feet and three - toed hind feet and related ancestrally to the horse. 始祖马始新世产于美国西部的一种属于蹄兔（或始祖马）属的哺乳动物，已灭绝，体型小，食草，前蹄四趾，后蹄三趾，为马的远祖

A small, herbivorous, extinct mammal of the genus Hyracotherium(or Eohippus) from the Eocene Epoch of the western United States, having four-toed front feet and three-toed hind feet and related ancestrally to the horse. 始祖马始新世产于美国西部的一种属于蹄兔（或始祖马）属的哺乳动物，已灭绝，体型小，食草，前蹄四趾，后蹄三趾，为马的远祖