大约在5百万年前，在现在的美国东南部，一只来自南美洲神秘的新来者正在吃着一只始祖马。

Around 5 million years ago, in what is now the southeastern United States，a mysterious newcomer from South America feeds on a primitive horse.

youdao

大约在5百万年前，在现在的美国东南部，一只来自南美洲神秘的新来者正在吃着一只始祖马。

Around 5 million years ago, in what is now the southeastern United States, a mysterious newcomer from south America feeds on a primitive horse.

youdao