单词	sand dollar
释义	sand dollar noun : any of numerous flat circular sea urchins (order Clypeasteroida) that live chiefly in shallow water on sandy bottoms Illustration of sand dollar Example Sentences Recent Examples on the Web And there’s the star cactus, which resembles a green sand dollar with a bright yellow bloom. New York Times, 3 Mar. 2022 Finding a sand dollar on a beach is obviously a completely normal experience that can be explained perfectly well through material cause and effect. The Salt Lake Tribune, 18 Feb. 2022 The Bahamas launched the world’s first central-bank digital currency, the sand dollar, in October 2020. Anthony Harrup, WSJ, 30 Dec. 2021 China is not the first nation to launch a digital currency—the Bahamas sand dollar was introduced six months before the digital RMB. Charlie Campbell, Time, 11 Aug. 2021 The Bahamas has already introduced a digital 'sand dollar', a digital legal currency equivalent to the Bahamian dollar, with an accompanying mobile app. Sophie Mellor, Fortune, 7 Apr. 2021 The species that are shrinking in distribution the most—anywhere from 30% to 50%—include the common sand dollar as well as the blue mussel, an economically important species and a keystone member of intertidal communities. Erik Stokstad, Science | AAAS, 7 Sep. 2020 During minus low tides, such as those that arrive during late afternoon over the Thanksgiving holidays, this is often a good area to find sand dollars (no collecting at Ocean Beach or inside the boundary of Funston or Thornton beach). Tom Stienstra, SFChronicle.com, 23 Nov. 2019 Simple treasures like sand dollars, shells, driftwood and bottles (some with notes) are the most common. Tom Stienstra, SFChronicle.com, 27 Oct. 2019 See More Word History First Known Use 1884, in the meaning defined above Kids Definition sand dollar noun : a flat round sea urchin
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