[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