单词	countershading
释义	countershading noun coun·​ter·​shad·​ing ˈkau̇n-tər-ˌshā-diŋ  : cryptic coloration of an animal with parts normally in shadow being light and parts normally illuminated being dark thereby reducing shadows and contours Example Sentences Recent Examples on the Web The latter, which is most common, features a pattern called countershading, in which the fish has a black back and a white belly. National Geographic, 11 Feb. 2020 The study of fossilized pigments has continued to expose new information about prehistoric life, hinting at potential animal survival strategies by showing evidence of countershading and camouflage. Jay Bennett, Smithsonian Magazine, 6 May 2012 Tree kangaroos show countershading, Holtz says, and the forest-dwelling raccoon dogs wear color patterns much like Sinosauropteryx. Brian Switek, Smithsonian, 26 Oct. 2017 Modern-day predators rely on an object’s shading to assess its shape, Vinther explains, and when prey is darker on top than on the bottom, a color scheme known as countershading, shadows are minimized and the animals look flatter. National Geographic, 14 Sep. 2016 A beautifully colored dinosaur fossil is the first to show evidence of countershading, a type of camouflage. National Geographic, 14 Sep. 2016 Word History First Known Use 1896, in the meaning defined above
随便看	Prusiner Prussia prussiae prussian Prussian blue Prussian brown Prussian carp Prussian Knight prussian red prussianer prussianest prussianisation prussianise prussianised prussianiser prussianisers prussianises prussianising Prussianism prussianisms prussianization prussianizations prussianize prussianized prussianizers

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