BBC听力 | 冰雪世界 16
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In some ways these birds are the penguins of the north.
从某种意义上说，这种鸟是北极的企鹅
They seek bare rock on which to lay their eggs
它们也在裸露的岩石上下蛋
and they look rather like penguins too.
而且它们的外形很像企鹅
Unlike Antarctica,
和南极不同的是
the Arctic can be reached by land-based predators
陆地食肉动物可以到达北极
which is why little auks have kept the ability to fly.
所以侏海雀没有失去飞翔的本领
They use scree slopes to protect their eggs,
它们利用碎石坡来保护它们的蛋
burrowing up to a metre beneath the rocks.
把窝建在一米深的岩石下面
At the height of summer the sun never sets
仲夏时节，太阳不会落下
but just skims the horizon before rising again.
它掠过地平线以后又重新升起
Migrants return to the Arctic from far and wide.
迁徙动物从四面八方远道而来
They've come to make the most of the brief flush of food
它们将充分利用这段食物丰富的短暂时光，
and to produce their young.
并且繁育后代
Sandhill cranes have travelled all the way from New Mexico.
沙丘鹤从新墨西哥州远道赶来
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