.. birds, the last surviving saurischian theropod dinosaurs.

..鸟类，最后幸存的蜥臀目兽脚亚目 恐龙。

The Saurischian or lizard-hip dinosaurs can be divided into two major groups.

蜥臀类或蜥臀类恐龙可分为两大类。

Can you tell if Stegosaurus is an Ornithischian or a Saurischian dinosaur?

你能分辨出剑龙是鸟臀目恐龙还是蜥臀目恐龙吗？

The Tyrannosaurus is a Saurischian or lizard head dinosaur.

霸王龙是一种蜥蜴科或蜥蜴头恐龙。

And in the case of saurischian dinosaurs, the pubis bone always pointed down, and forward.

在蜥臀目恐龙的情况下 ，耻骨总是指向下方和前方。

We'll start with this big group of two-legged saurischian dinos: the theropods.

我们将从这一大群两条腿的蜥蜴类恐龙开始：兽脚类恐龙。

Birds belong among saurischian dinosaurs, not among the ornithischians.

鸟类属于蜥臀目恐龙，而不属于鸟臀目。

That's one of the easiest ways to tell an Ornithischian dinosaur from a Saurischian dinosaur.

这是区分鸟臀目恐龙和蜥臀目恐龙的最简单方法之一。

Of the entire dinosaur family, only birds -- a single group of saurischian theropods -- survives, and they range in size from the hummingbird to the ostrich.

在整个恐龙家族中， 只有鸟类——一群蜥脚亚目兽脚类动物——幸存下来，它们的体型从蜂鸟到鸵鸟不等。

The other group of Saurischian dinosaurs were the Theropods and the Theropods were a highly diverse group that included both carnivorous dinosaurs and other forms, including some omnivores and some herbivores.

另一组蜥脚类恐龙是兽脚类恐龙，兽脚类恐龙是一个高度多样化的群体，包括食肉恐龙和其他形式，包括一些杂食动物和一些食草动物。