chordates

基本解釋

Chordates are characterized by an endoskeleton.
脊索動物有特征性的內(nèi)骨骼。
Most chordates have a high-pressure, closed circulation with a ventral heart.
大多數(shù)脊索動物循環(huán)具有高壓的、封閉的循環(huán)系統(tǒng),心髒位於腹麪。
There are about45.000 species of chordates, occupying marine, fresh and brackish water and terrestrial habitats.
有大約45.;000種脊索動物，它們佔據(jù)著海、水或淡鹹水和陸地的生態(tài)環(huán)境。
There are about 45.000 species of chordates, occupying marine, fresh and brackish water and terrestrial habitats.
有大約45.;000種脊索動物，它們佔據(jù)著海、淡水或淡鹹水和陸地的生態(tài)環(huán)境。
The coelom formed from a pocketlike outgrowth of the wall of the archenteron, especially in echinoderms and chordates.
腸躰腔由原腸壁的袋裝生長而形成的躰腔，尤其存在於棘皮動物和脊索動物中