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两极之间 From Pole To Pole
What would the earth be like without the sun? We'll never know, but the emperor penguins come the nearest to that experience, as they suffer through winter in Antarctica, where temperatures can drop to minus 70 degrees centigrade. Meanwhile, the sun brightens the far north and the polar bears come out of hibernation. Spring in northern Canada means the migration of three million caribou across the arctic tundra. Winter in the deciduous forests of eastern Russia makes hunting difficult for the Amur leopard, the rarest cat in the world. On the island of New Guinea, birds have plenty of food, giving them time for elaborate mating rituals. "The sun influences life in the oceans just as it does on land," explains the narrator. We watch where the seals go to breed -- and we see the Great White sharks that follow them. What would the Earth be like without water? "Planet Earth" shows us where water is abundant and where it is scarce. During the dry season in the Kalahari desert, elephants go on an urgent search for water, which they find in Okavango. "The water brings a season of plenty for all animals." And that includes the wild dogs hunting impala. "Planet Earth" offers rare footage of the hunt; and in an afterword, we find how they got it.
我们永远不会知道，若没有太阳，地球将会如何？南极的帝企鹅却要在零下70摄氏度的低温中，度过漫漫6个月的冬天。而此时此刻，地球另一端的北极，新生的北极熊宝宝从冬眠的洞穴中钻出了脑袋。春天的到来带来了加拿大北部三百万头驯鹿的大迁徙。俄罗斯东部森林依旧白雪皑皑，珍稀的阿穆尔豹踪迹难觅。新几内亚小岛上，衣食无忧的天堂鸟华丽地展示羽毛，跳一出惊艳无比的求偶舞蹈。阳光不仅影响着陆地上的，也影响着大海中的生死存亡。海豹集中前去繁殖，引来大白鲨尾随而至，上演令人屏息静气的海上捕杀。除了阳光，还有水。大象徒步踏过喀拉哈里沙漠的旱季，最终到达洪水灌溉的奥卡万戈三角洲，一季泽国带来了物种的多样化，鬣狗高效地围追堵截羚羊。四季轮回，光阴不止。南极洲的帝企鹅，引来了六个月以来的第一缕阳光。
