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Grizzly bears once roamed much of the United States. But two centuries of hunting and habitat loss have devastated their numbers. Today, less than 1,200 live in the Lower 48. If there is a last remaining stronghold for the North American Grizzly, it
发表于:2018-12-30 / 阅读(134) / 评论(0)
国家地理2007年
国家地理2007年