But it was the sauropods like Brontosaurus, Diplodocus and Brachiosaurus who reached enormous proportions.

但蜥脚下目类的恐龙，比如雷龙梁龙和腕龙达到了巨大的比例。

But paleontologists believe that ninjatitans were sauropods with bodies like brontosaurus.

但古生物学者认为忍者泰坦龙是和雷龙的身体一样的蜥脚类动物。

And so above us, we see a huge new dinosaur museum and arching up the huge neck of a stainless steel sauropod or Brontosaurus, looming over a courtyard studded with dinosaur tracks.

在我们之上，那是一座新建的大型恐龙物馆，一只不锈钢蜥脚龙或雷龙的巨大脖颈伸展着，俯瞰着布满恐龙足迹的后院。

But the colossal crown goes to a group of sauropods called titanosaurs.

但巨冠要颁给蜥脚类恐龙中的泰坦龙。

Step 1: discover and dig A team from the Natural History Museum of Los Angeles County first spotted the sauropod dinosaur they call Gnatalie in 2007 after erosion revealed a single leg bone beside a bluff in southeastern Utah.

发现、挖掘2007，犹他州东南部一座悬崖旁，有一根腿骨因侵蚀而暴露出来之后，洛杉矶物馆的一个团队首次发现了这只蜥脚类恐龙，他们称之为蚋塔莉。

The Sauropods are probably digging these nests, probably kicking out a little hole with the hind foot, squatting down, depositing a few eggs...maybe five or six, maybe a dozen...covering them up, and then just walking away, forgetting about them.

波塞东龙可能只是挖下巢穴用后肢打了一个小洞蹲下，产下几只蛋可能是五六个，也可能十来个把它们埋起来，后一走了之忘得一干二净。

Because our logistic system is quite efficient, and a lower cost compared with sauropod a logistic delivery companies.

因为我们的物流网络相当高效，和比起第三方物流公司我们的成本更低。

Certainly not as sort of plodding as what we think many of the long-necked Sauropods were like.

当也不是我们想象中那些长颈蜥脚类那样蹒跚踱步。

The real super-stars of the show are the sauropods.

本期视频的真正超级明星就是蜥脚类恐龙。

Sauropods were probably burping and farting almost continuously, because that's what big plant eaters do.

波塞东龙无时无刻不在打嗝，放屁，因为巨型食草动物都会如此。

Unfortunately for this sauropod, it's unaware of the mud trap that lies just beneath the cracked and dry upper crust.

这头蜥脚类恐龙很不幸，它没有注意到这个烂泥陷阱就藏在干硬开裂的表层之下。

If you want to have lots of offspring, you have to have little or no parental care. Sauropods took that route.

如果你选择拥有很多后代，父母的呵护只能少之又少了。波塞东龙选择了那条路。

Sauropods are dinosaurs that walked on four legs, had long necks and tails and ate plants.

蜥脚类恐龙四肢行走，脖子和尾巴都很长，属草食性恐龙。

Reaching enough food wasn't a problem for the titanosaurs and other sauropods either.

获得充足的食物对泰坦龙和其他蜥脚类恐龙来说不成问题。

Allosaurus's feeding on sauropods, animals that're multi-times the size of our largest mammals today, the elephant.

异特龙捕食蜥脚类恐龙，蜥脚类恐龙可比如今陆地上最大的哺乳类动物大象还要大好几倍。

One of the curious things about sauropods is that they did have a swelling in the spinal cord, in the neighborhood of their pelvis.

蜥脚类恐龙的奇妙之处在于它们在骨盆附近的脊髓处有个突起。

Ceratosaurus, although a pretty nasty predator, was not really suited for taking on adult size Stegosaurus or those long-necked sauropods found at the site.

角鼻龙，虽是很凶残的掠食者，但肯定不适合攻击在石场发现的成剑龙或是那种长颈的蜥脚类恐龙。

To look at these big sauropods like Sauroposeidon, they're growing to 20,30,40,50 tons, and they're doing it in the space of just two or three decades.

如果观察蜥蜴类动物中类似波塞东龙的恐龙，它们能长到二十至五十吨，而且它们所花的时间仅仅是二三十。

It may have fed solely on Sauropods, it may have fished, it may have gone after smaller prey.

它可能只以蜥脚类恐龙为食，它也许以鱼类为食，它可能攻击更小的猎物。

So, where are the smaller animals? What did the sauropods do until they were a third grown? They weren't moving with the herd.

那那些小波塞东龙在哪里呢？在长大之前它们在做什么呢？它们不会跟着种群一起走。