BBC听力 | 冰雪世界 05

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from the relentless battering of the southern ocean

使得躲避残酷的南极风浪冲击

In the depths something stirs

水下深处有东西在游动

Humpback whales

座头鲸

They have travelled over 5,000 miles to reach these waters

它们从五千里之外游到了这片水域

The whales are harvesting krill

它们是来吃磷虾的

shrimp-like creatures

长得像小虾的生物

that begin to swarm here as soon as the ice retreats

冰层刚刚融化之后大量地聚集到这里

Diving into the heart of the swarm

座头鲸会潜入到虾群的下方

teams of whales spiral round each other in close coordination

一头紧跟着一头形成包围圈

Now they turn

现在它们转过头

blasting air from their blowholes

用它们的气孔喷出空气

and ascend towards their prey

将猎物往上赶

The krill becomes concentrated

使磷虾集中到一起

as the spiralling net of bubbles draws inwards

伴随着螺旋上升的气泡形成内吸力

The team of whales work round the clock

座头鲸队们日夜不停地捕食

for the boom is short lived

因为这样的盛宴很短暂

Summer is already fading

夏天就要结束了

and the whales will soon be forced north as winter returns

在冬天前它们就不得不到北方去

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