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分類：自然
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簡介：本片將近距離走進北美熊類的生活，和野生動物學家Chris一起踏上一次驚險的摩托車之旅，深入阿拉斯加腹地熊的領地，探索這些神奇動物在阿拉斯加不同生態系統下如何適應生存。包括海岸線、城市、山地、凍原和浮冰上。每一集將介紹一種北美熊。收起
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