But it has a large nervous system in a range comparable to vertebrates.

但是它有庞大的经系统，范围可以跟脊椎动物相当。

But, of the vertebrates unpredictable Nature selected only snakes (and one lizard).

而，在脊椎动物中，大秘模测地只选择了蛇（还有一种蜥蜴）。

Cephalopods may have evolved complex brains long before our vertebrate relatives.

头足类或许比我们的脊椎动物近亲更早演化出复杂的脑部。

Unlike most vertebrates, a sea turtle's sex is not determined by sex chromosomes.

大多数脊椎动物不同，海龟的性别不是由性染色体决定的。

And that's completely brand new to science in any vertebrate animal.

这对任何脊椎动物学来说，都是全新的发现。”

Well, just in the last century, we have lost 615 species of vertebrate animals.

就在上个世纪，我们已经失去了 615 种脊椎动物。

Bulkier vertebrates have to have more massive bones.

体积较大的脊椎动物必须有更大的骨骼。

But mammals are distinguished from other vertebrates by a number of shared features.

但是哺乳动物脊椎动物的 不同之处在于以下这些共同特征。

By human standards, a few vertebrate species have incredible longevity.

按照人类的标准，有一些脊椎动物的寿命长得令人难以置信。

" That still makes the Greenland shark the longest-living vertebrate known to science."

“尽管如此，格陵兰鲨鱼仍是迄今为止学界发现的最为长寿的脊椎动物。”

In vertebrates, it is composed of blood cells suspended in blood plasma.

在脊椎动物中，它是由悬浮在血浆中的血细胞组成的。

Pterosaurs were the first vertebrates to master flight.

翼龙是最早掌握飞行的脊椎动物。

Snakes are also vertebrates, which means that they have a backbone.

蛇类也是脊椎动物，说明它们有脊椎骨。

They are vertebrates, which means they have backbones, and, like mammals, they are warm-blooded.

它们是脊椎动物，也就是说它们有脊柱，和哺乳动物一样，它们是恒温动物。

That would make it the largest concentration of land vertebrates anywhere on Earth.

这是地球上陆生脊椎动物密度最高的地方。

To survive, they race to maturity, with the shortest generation time of any vertebrate.

为了活下去，它们以脊椎动物中最短的代时争先恐后地长大成熟。

Everyone knows that fish make up the fourth and last class in the vertebrate branch.

大家知道鱼类是脊推动物门中的第四纲和最后一纲。

Over the past 500 years, more than 300 species of vertebrates like these have disappeared.

但在过去的500年中, 超过300种脊椎动物已经从地球上消失。

Now, that's incredible because snakes are of lower vertebrates.

这更加令人难以置信了，因为蛇属于低等脊椎动物。

Among vertebrates, we actually see the greatest size variation in the cerebellum, not the neocortex.

在脊椎动物中，我们实际上在小脑而不是大脑皮层看到了最大的尺寸变化。