(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…
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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