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单词 keyhole urchin
释义

Definition of keyhole urchin in English:

keyhole urchin

noun

  • Any of various sand dollars having one or more elongated perforations in the test and belonging to the family Mellitidae or related families; especially one of the genus Mellita of the Atlantic coasts of America.

Origin

Mid 19th century.

Definition of keyhole urchin in US English:

keyhole urchin

noun

  • Any of various sand dollars having one or more elongated perforations in the test and belonging to the family Mellitidae or related families; especially one of the genus Mellita of the Atlantic coasts of America.

Origin

Mid 19th century.
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更新时间：2025/2/7 9:33:35