serpula
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基本解释
n. [动]龙介虫
英文释义
n. Any one of numerous species of tubicolous annelids of the
genus Serpula and allied genera of the family Serpulidae. They secrete
a calcareous tube, which is usually irregularly contorted, but is
sometimes spirally coiled. The worm has a wreath of plumelike and often
bright-colored gills around its head, and usually an operculum to close
the aperture of its tube when it retracts.
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