Vertebrates are animals with backbones and bones inside their bodies. The bones help to support their bodies.

脊椎动物是身体里边有脊椎和骨头的动物。这些骨头来帮助支撑他们的身体。

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

但是它有庞大的神经系，可以跟脊椎动物相当。

And he says that the octopus has a nervous system that is comparable to vertebrates.

他还说章鱼拥有能够跟脊椎动物相当的神经系。

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

然而，在脊椎动物中，大自然神秘模测地只选择了蛇（还有种蜥蜴）。

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.

与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.

这对任何脊椎动物来说，都是全新的发现。”

Egg-laying vertebrates all have at least one copy of this gene.

卵生动物，脊椎动物都至少有这个基因的个副本。

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。

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

按照人类的标准，有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。

The two largest groups of animals are vertebrates and invertbrates.

最大的两个类别是脊椎动物和无脊椎动物。

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。