grayback

英 美

n.  灰色动物（如：灰鲸，黑头鸦，斑背潜鸭等）

英英释义

noun

  1. a sandpiper that breeds in the Arctic and winters in the southern hemisphere

      Synonym:    knotgreybackCalidris canutus

    1. a dowitcher with a grey back

        Synonym:    greybackLimnodromus griseus

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