echi·no·derm /ɪˈkaɪnəˌdɚ/
  棘皮動物類的動物
  echi·no·derm /ɪˈkaɪnəˌdɝm/ 名詞
  棘皮動物
  E·chin·o·derm n. Zoöl. One of the Echinodermata.
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  echinoderm
       n : marine invertebrates with tube feet and calcite-covered
           five-part radially symmetrical bodies