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单词 θ30914
释义
the world > animals > animal body > general parts > internal organs and systems > [noun] > branched system of respiratory passages (1)
respiratory tree1834

(a) (in sea cucumbers) either of two thin-walled, highly branched organs that draw in oxygenated sea water from the cloaca and extend into the…

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更新时间:2025/2/3 18:54:51