purple sock

名词 n.

英文释义

名词 n.
  1. Any of the genus Xenoturbella of marine deep-water flatworm-like animals of the phylum Xenacoelomorpha.
    — [see title] The animal, called Xenoturbella, is so bizarre that for 60 years researchers could not work out what it was - or where it fitted into the family tree.

词形变化

purple socks plural
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