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Dutch immigrant, Harry deLeyer, journeyed to the United States after World War II and developed a

This feature-length documentary tells of the rise and fall of the Black Panther Party, one of the 20

黄石国家公园（Yellowstone National Park）拥有众多的景观和种类繁多的动物，聚集在一个引人入胜的生态系统中。该地区曾经有19000多只麋鹿，但在过去的20年中，其数量猛跌了80％