We were starting to be bipedal.

我们始用两足行走。

It's a bipedal carnivore. It was very fast.

它是一种两足肉食动物。它的速度很快。

On the next level, we find the extraordinary trackway of a bipedal crocodile.

继续往上，我们看到双足鳄鱼留下的特别足迹。

We might have lost it because of our unique mode of bipedal locomotion.

由于我们独特的双足运动方式，我们可能已经失去了它。

There are two forms of locomotion in dinosaurs, there is bipedal and quadrupedal.

恐龙的运动方式有两种，两足运动和四足运动。

One area of paleoanthropological study involves the eating and dietary habits of hominids, erect bipedal primates—including early humans.

古人类学研究的一个领域涉及原人（双脚直立行走的灵长类动物，包括早期人类）的饮食习惯。

It has just launched Digit, a bipedal, two-armed robot which has the look of an ostrich about it.

该公司刚刚推出一款双腿双臂人Digit，外形酷似鸵鸟。

More such machines are starting to appear from other firms and research groups. Some are also quadrupeds. Others are bipedal.

越来越多的此类始出现在其他公司和研究团体中。一些也是四脚的，一些是双脚的。

It would have been among the fastest bipedal animals in the history of the world at least for big animals.

是世界历史上最快的两足动物之一，起码对于在大型动物来说是。

Not the bipedal working robot you see here, but the fact that Google has bought the company that makes it.

不是你在这里看到的工作双足人, 而是事实上Google收购了这家公司。

In 2012, the same team of researchers found bipedal tracks there.

2012 年， 同一组研究人员在那里发现了双足足迹。

So, quadrupedal dinosaurs evolved from bipedal ones.

所以，四足恐龙是从两足恐龙进化而来的。

This is not how you'd engineer bipedal legs from the ground up.

这不是你从头始设计双足腿的方式。

So little Scleromochlus appears to be a bipedal, ancestral cousin of a quadrupedal group.

如此小的 Scleromochlus 似乎是四足类群的两足类远亲。

If Boverisuchus wasn't bipedal, I'd have to say I'd be disappointed.

如果 Boverisuchus 不是双足动物，我不得不说我会很失望。

Humans change their stance from quadrupedal babies, to bipedal adults.

人类将他们的姿势从四足婴儿转变为双足成人。

Someday, another species of bipedal  apes may create stone tools and build their first settlements.

有一天，另一种双足猿可能会制造石并建立他们的第一个定居点。

The correct answers are A and B. Ornithopods are typically bipedal herbivorous dinosaurs.

正确答案是 A 和 B。鸟脚类动物通常是双足食草恐龙。

Did pterosaurs come from bipedal, running ancestors, or quadrupedal ancestors that lived in trees?

翼龙是来自两足、奔跑的祖先，还是生活在树上的四足祖先？

" The real punchline of our story is we have proof of large bipedal crocs" .

“我们故事的真正重点是我们有大型双足鳄鱼的证据” 。