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单词 sea urchin
释义

WordReference Random House Learner's Dictionary of American English © 2024
ˈsea ˌur•chin, n. [countable]
  1. Invertebratesa small, round sea animal with a shell of plates covered with spines.

WordReference Random House Unabridged Dictionary of American English © 2024
sea ur′chin, 
    1. Invertebratesany echinoderm of the class Echinoidea, having a somewhat globular or discoid form, and a shell composed of many calcareous plates covered with projecting spines.
    2. Plant Biologya tall evergreen shrub or small tree, Hakea laurina, of Australia, having narrow leaves and dense, globe-shaped clusters of crimson flowers with long yellow stamens.
    • 1585–95

Collins Concise English Dictionary © HarperCollins Publishers::
sea urchin n
  1. any echinoderm of the class Echinoidea, such as Echinus esculentus (edible sea urchin), typically having a globular body enclosed in a rigid spiny test and occurring in shallow marine waters
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