单词	sun dog
释义	sun dog noun 1 : parhelion 2 : a small nearly round halo on the parhelic circle most frequently just outside the halo of 22 degrees Example Sentences Recent Examples on the Web Half a sun dog indicates that death is coming for someone. Porter Fox, CNN, 29 Dec. 2021 The colors occur when sunlight passes through the ice crystals, similar to how sun dogs or halos form. Kathryn Prociv, Washington Post, 30 Mar. 2018 But this picture also holds another interesting effect: sun dogs. Mika Mckinnon, Smithsonian, 5 Feb. 2018 When sun dogs are present due to high cirrus clouds, they can actually be used as a forecast tool. Kathryn Prociv, Washington Post, 23 Feb. 2018 Similar to sun dogs, lunar and solar halos belong to the family of ice halos, which are optical phenomena formed by the refraction of sun on hexagonal ice crystals suspended high up in the atmosphere, most commonly in cirrus clouds. Kathryn Prociv, Washington Post, 13 Apr. 2018 Another arc of light swoops through the center of the image, crossing the sun and sun dogs. Mika Mckinnon, Smithsonian, 5 Feb. 2018 See More Word History First Known Use 1635, in the meaning defined at sense 1
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