体腔动物拥有一个体腔包含内部器官。

Coelomate has a body cavity containing the internal organs.

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脊索动物两侧对称、三胚层，分节的体腔，在胚胎发育的早期过程中，显示为后口类型。

Chordates are bilaterally symmetrical, triploblastic, segmented coelomates which demonstrate a deuterostomic pattern of early embryonic development.

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浮浪幼体腔肠动物其扁平的，能自由浮游的，有纤毛的幼体。

The flat, free-swimming, ciliated larva of a coelenterate.

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浮浪幼体腔肠动物其扁平的，能自由浮游的，有纤毛的幼体。

The flat, free-swimming, ciliated larva of a coelenterate.

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