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PBS球-动物趣闻

Equines are the subfamily of equids that includes modern horses.

动物是包括现代马在内的马动物亚

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PBS球-动物趣闻

And only one of these subfamilies survives today.

今天,这些亚中只有一个幸存

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PBS球-动物趣闻

So two out of the three canid subfamilies are dead and gone.

所以犬动物的三个亚中有两个已经死去。

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Silphid beetles belong to the subfamily Nicrophorinae, and parenting beetles don't just simply bury small dead creatures and leave.

Silphid 甲虫属于 Nicrophorinae 亚,育儿甲虫不只是简单埋葬小的死生物然后离开。

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PBS球-动物趣闻

But around 30 million years ago, a new subfamily of canids appeared: Caninae, or canines, the true dogs.

但大约 3000 万前, 出现了一个新的犬动物亚:Caninae,或犬动物, 真正的狗。

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PBS球-动物趣闻

It appears in the fossil record around 30 million years ago and may be the earliest member of the second great subfamily, the Borophaginae, the bone-crushers.

它出现在大约 3000 万前的化石记录中,可能是第二大亚 Borophaginae(碎骨动物)的最早成员。

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PBS球-动物趣闻

And that first subfamily, the hesperocyonines, had already died out about 13 million years earlier, unable to compete with both and bone-crushers and the arrival of the cats.

而第一个亚, hesperocyonines,已经在大约 1300 万前灭绝,无法与破碎机和猫动物竞争。

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PBS球-动物趣闻

Now, tens of millions of years ago, some ancestral canid, whether it was Prohesperocyon or someone else, was the predecessor to the first of the three great subfamilies of canids.

现在,数千万前, 一些祖先的犬动物,无论是Prohesperocyon还是其他,都是犬动物三大亚中第一个的前身。

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PBS球-动物趣闻

One of the culprits in their decline was the third and final subfamily of canids: The Caninae, the only group of dogs that would be left standing.

它们衰落的罪魁祸首之一是犬动物的第三个也是最后一个亚:犬亚,这是唯一幸存的狗类。

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