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单词 echiurid
释义 echiurid
 /ek'ee yoor"id/,  n.  
 any of various unsegmented marine worms of the phylum Echiura, comprising the spoonworms.
 [ < NL Echiurida, var. of Echiura < Gk échi(s) viper + -oura neut. pl. of -ouros -tailed (deriv. of ourá tail); Cf. Echiurus a genus of the phylum; see -IDA]
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