chordates

常見例句

• 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
• A flexible rodlike structure that forms the main support of the body in the lowest chordates,such as the lancelet;a primitive backbone.
  脊索細胞構(gòu)成的一條縱長可彎曲的桿狀結(jié)構(gòu)，其作用是引導產(chǎn)生神經(jīng)板，形成軀體的支持軸
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