单词	Spatangus
释义	Spatangus noun Spa·​tan·​gus spəˈtaŋgəs : an ill-defined genus (the type of the family Spantangidae) of sea urchins including many of the commonest and best-known heart urchins Word History Etymology New Latin, from Greek spatangēs, a kind of sea urchin
随便看	piston rod piston spring piston valve pistonhead pistonlike pistonphone pistons pistou pistous Pisum pisé pisé de terre pisés pisés de terre pit pit against pit annulus pit aperture pit band pit border pit boss pit bull pit bull terrier pit bulls pit canal

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