In the big carnivorous dinosaurs, you have hollow bones.

大型的食肉恐龙的骨头是中空的。

And so it couldn't have narrow teeth the way the other carnivorous dinosaurs did.

所以它不能像其它肉食恐龙那样拥有窄牙。

This is one of the biggest carnivorous dinosaurs ever to walk the earth.

这是地球史上最大的食肉恐龙。

One of those tools is its nose, the most sensitive found on any carnivorous dinosaur.

其中之一就是鼻子，这是所有食肉恐龙身上最灵敏的部位。

Wishbones today only exist in birds, yet virtually every one of the most ferocious carnivorous dinosaurs had one.

现今，叉骨只存在于鸟类之中，然而所有凶残的肉食恐龙也都具有叉骨。

These are extremely rare, and they probably looked like the carnivorous dinosaurs and were just as ferocious at 15 feet long.

这类鳄鱼非常少见，看起来可能像肉食恐龙，并且长达 15 英尺，同样地凶暴。

And multiple species of T-rex-sized carnivorous dinosaurs called theropods, lived side by side.

多种霸王龙大小的肉食性恐龙， 称为兽脚类恐龙，并肩生活。

And for decades, paleontologists thought this fossil belonged to a carnivorous dinosaur called Megalosaurus.

几十年来，古生物学家一直认为这块化石属于一种名为斑龙的食肉恐龙。

Hesperonychus was a small carnivorous dinosaur, probably about the size of a chicken.

Hesperonychus 是一种小型食肉恐龙，大概和鸡差不多大。

And these feathers are from things like tyrannosaurus, compsognathids, and other carnivorous dinosaurs.

这些羽毛来自暴龙、美颌龙和其他肉食性恐龙。

And this is something that's very different than what we see, in the carnivorous dinosaurs.

这与我们在食肉恐龙身上看到的非常不同。

In most carnivorous dinosaurs, like tyrannosaurs, it attached high up, near the hips.

在大多数食肉恐龙中，如霸王龙，它附着在臀部附近的高处。

The discovery of a carnivorous dinosaur also in New Jersey, eventually named Dryptosaurus, showed that it was bipedal, too.

还在新泽西州发现了一种食肉恐龙，最终命名为 Dryptosaurus， 表明它也是双足动物。

We know from the same deposits that there were fossils of tyrannosaurus, large carnivorous dinosaurs that probably would have eaten this poor little dinosaur.

我们从相同的沉积物中得知，那里有霸王龙的化石，这些大型食肉恐龙可能会吃掉这种可怜的小恐龙。

Can you think of some of the adaptations that carnivorous dinosaurs might have had for locating, catching, and devouring their prey?

您能想出食肉恐龙在定位、捕捉和吞食猎物方面可能具有的一些适应性吗？

If I find even a fragment of a tooth with the serrations on it of a carnivorous dinosaur, I can often tell you exactly what kind of carnivorous dinosaur that it belongs to.

如果要是找到了牙齿的一部分，上面有锯齿，属于一种肉食恐龙，我一般能看出来这具体是哪一种肉食恐龙。

Imagine for a minute these little birds scratching in the sand and how different it would be to see a giant, 2,000-pound carnivorous dinosaur gouging huge scoops in the substrate.

想象一下，小鸟在沙子上经过，这与一头巨型 2000 磅的肉食恐龙在地层上踩出巨坑的差别。

It's quite likely that the teeth of carnivorous dinosaurs have rotting meat, little bits of it, caught in their teeth and therefore a lot of bacteria and therefore an infectious bite.

很明显，这些肉食恐龙的牙齿上沾有腐肉，只要有一点挂在牙齿上，然后就会滋生细菌使伤口感染。

Some researchers suggested that the strange remains from the Gobi came from theropods, the group that includes carnivorous dinosaurs like Tyrannosaurus rex (maybe you've heard of it), and Allosaurus.

一些研究人员认为， 这些来自戈壁的奇怪遗骸来自兽脚类动物，该类动物包括食肉恐龙， 如霸王龙（也许你听说过）和异特龙。

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。