[00:00:01]During the months underground,

在地下的数月时间里

[00:01:59]all they've known is their mother.

它们只认识自己的母亲

[00:04:23]Now, the big, wide world holds all sorts of challenges

如今 对于这些勇敢的小小探险家来说

[00:08:42]for these brave, young explorers.

广阔的世界充满各种挑战

[00:11:08]The mother leads her new family out over the frozen sea

熊妈妈带领新家庭来到冰冻的海面上

[00:23:26]to hunt for seals.

捕猎海豹

[00:25:32]But the spring melt is already under way.

但春季的冰雪消融已悄然而至

[00:37:01]All across the Arctic, the sun's warming effect is increasing.

在北极 阳光的增温效应不断加速

[00:41:47]Sea ice is showing the first signs of weakening.

海冰首度出现了融化的迹象

[00:48:43]Inland, the northern rivers are still locked in ice.

在内陆地区 北部的河流仍处于冰封期

[00:56:10]The frozen waterfalls are like dams,

冻结的瀑布如同大坝一般

[00:58:40]holding back billions of tonnes of fresh water

储备着数十亿吨

[01:01:28]that has not moved for almost six months.

冻结已近半年的淡水资源

[01:08:02]The vast watershed lies motionless.

如此巨大的水库一直静卧在那里

[01:10:49]But as spring advances,

但随着春天的临近

[01:12:29]it begins to stir.

它开始骚动起来

[01:19:41]The frozen waterfalls start to weaken.

冻结的瀑布逐渐消融

[01:23:12]Above them, the pressure is mounting.

上游处的压力与日俱增