山下盛开的箭叶脂根菊,美国大提顿国家公园 (© Mike Cavaroc/Tandem Stills + Motion)(Bing United States)

山下盛开的箭叶脂根菊,美国大提顿国家公园 (© Mike Cavaroc/Tandem Stills + Motion)(Bing United States)

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