[00:00:01]For those who can get here, in summer,

海水为那些在夏天光临到此的生物

[00:07:03]these waters provide a feast of epic proportions.

提供一场空前绝后的盛宴

[00:11:17]But the good times will be very short -

但美好的时光转瞬即逝

[00:14:01]a problem that faces all life in the polar regions.

这是极地所有生命所面临的问题

[00:20:55]Journeying south across the Arctic Ocean,

向南穿越北冰洋

[00:23:32]the first land you reach is Greenland,

抵达的第一站是世界第一大岛

[00:26:13]the largest island in the world.

格陵兰岛[字面义为绿岛]

[00:30:07]Despite its name, Greenland is mostly white,

与它的名字不同 格陵兰岛以白色为主

[00:33:33]covered by a giant ice sheet

被一块硕大的冰原覆盖

[00:35:23]six times the size of the United Kingdom.

它的大小是英国的六倍

[00:42:28]In the middle of the island, the ice is nearly two miles thick.

在岛中央 冰层有三千米厚

[00:46:21]It's a bleak, quiet world.

一个荒凉寂静的世界

[00:55:03]Sapphire-blue melt lakes

海水融化成的宝石蓝湖泊

[00:57:20]are the first sign that a dynamic process is underway.

表明一个变化正在悄然发生

[01:00:54]Each lake forms in a matter of days,

每个湖的形成需要几天时间

[01:07:53]expanding until it's miles across

湖面慢慢扩大 宽达几公里

[01:10:25]and starts to overflow.

最后开始溢出

[01:14:24]The spill water then carves its way through the ice.

流水在冰面上开凿出条条水道