基本解釋脊睡物,脊睡物門同根派生 chordates相關(guān)詞英漢例句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),心臟位于腹面。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，它們占據(jù)著海、水或淡咸水和陸地的生態(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，它們占據(jù)著海、淡水或淡咸水和陸地的生態(tài)環(huán)境。The coelom formed from a pocketlike outgrowth of the wall of the archenteron, especially in echinoderms and chordates. 腸體腔由原腸壁的袋裝生長而形成的體腔，尤其存在于棘皮動物和脊索動物中chordates更多例句