[00:01:07]As the Antarctic summer draws to an end, 南极的夏天接近尾声 [00:04:20]visitors that rely on the brief 海冰重新出现 [00:06:05]flush of food will soon 为这片海短暂的丰腴 [00:07:43]be forced north by the return of the sea ice. 而来的拜访者 将被迫向北撤离 [00:15:56]For the largest land predator, 对最大的陆地捕食者来说 [00:18:19]the sea ice cannot return soon enough. 海冰的迅速出现并非好事 [00:23:05]The end of the Arctic summer 北极的盛夏接近尾声 [00:27:33]and the sun hasn't set for three months. 三个月以来 太阳未曾落下 [00:31:10]It's hard to imagine the bitter cold will soon return. 难以想象的是 严寒将很快再次袭来 [00:38:39]Some will welcome the chills of autumn, 某些动物会泰然接受秋季的萧索 [00:50:10]but for most, 而对于大多数而言 [00:51:07]time is running out before 被迫向南迁徙的日子 [00:52:59]they will have to retreat to the south. 正在一步步逼近 [01:02:02]The shorter days and colder nights trigger 越来越短的白昼和越来越冷的黑夜 [01:05:10]a dramatic change in the willows and blueberry bushes. 让柳叶和蓝莓丛发生了奇妙的变化 [01:09:09]They stop producing the green pigment 它们停止分泌 [01:11:19]that harnesses the sun's energy, 吸收太阳能量的绿色素 [01:13:33]and red and yellow pigments build up in their leaves. 红色素和黄色素染上了叶子

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