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中华秋沙鸭是中国特有鸟类，被称为鸟类中的活化石，目前地球上仅存两千多只，在小兴安岭的碧水自然保护区内，发现了有少量的中华秋沙鸭在繁育栖息。该片通过长期拍摄，详实地记录了中华秋沙鸭在野生状态下从求偶、组建家庭、繁殖孵化、养育成长到南迁的全过程。。The Cassini spacecraft was sent on its way to Saturn in 1997. Since then, she has travelled nearly four billion kilometers, delivered a probe to a toxic moon, discovered phantasmagorical structures on the planet's icy rings, studied the startling atmosphere on a tiny moon. Now, on a daring spiral orbit, Cassini will streak toward Saturn itself, streaming data to Earth before be...。