vertebrates

The origin of vertebrates and their ancestry are problems still obscured by too few facts.

脊椎动物的起源和它们的始祖问题,由于事实太少仍然不很清楚.

Bones are rigid organs that form part of the endoskeleton of vertebrates.

骨为坚硬的器官,为脊椎动物内骨骼的一部分.

All mammals are umbilicate vertebrates.

所有的哺乳类动物都是有肚脐的脊椎动物.

The fish is the oldest vertebrates in the planet.

鱼类是地球上最为古老的脊椎动物.

Botany, earth science, invertebrates, and vertebrates.

收藏植物学、球科学 、 脊椎动物和脊椎动物.

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

但是, 在脊椎动物中, 神秘莫测的大自然只选择了蛇 ( 和一种蜥蜴 ).

Crocodile not fish, reptiles of vertebrates, ZuLong extant insects are the offspring.

鳄鱼不是鱼, 属脊椎动物爬行虫纲, 是祖龙现存唯一的后代.

In vertebrates, infection by microparasites results in a strong immunological response.

脊椎动物被微寄有生命的物质传染后会孕育发生强烈的免疫反应.

Endemism of vertebrates and invertebrates is also very high.

公园里的本地特有的脊椎动物和无脊椎动物也很多.

The main groups of vertebrates are: fishes, amphibians, reptiles, birds and mammals.

脊椎动物的主要种类是鱼类, 两栖动物, 爬行动物, 鸟类和哺乳动物.

Twice a month, Falk spent the entire day observing all vertebrates-primarily birds-on the lawn.

福尔克每月两次全天观察草坪上的脊椎动物 —— 主要的是鸟类.

Both groups share two attributes normally associated with vertebrates.

两组都具有通常脊椎动物才具备的两个特征。

The outermost layer of the skin of vertebrates; epidermis.

有关表皮下层, 或位于表皮下层.

Fish, birds, and human beings are vertebrates.

鱼 、 鸟和人类都是脊椎动物.

They are vertebrates, that is, animals that have backbones.

它们是脊椎动物, 即有脊骨的动物.