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ammonoid是什么意思

ammonoid

美[æ'mɒnɔɪd]  英[æ'mɒnɔɪd]
n.  [古生物]菊石(已灭绝的头足动物)
  近义词:ammonite,

英英释义

Noun
  1. one of the coiled chambered fossil shells of extinct mollusks
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