The polar bear cubs emerge from the den in which they were born. 小北极熊从洞穴中探出头来
As the days shorten, its warmth is withdrawn from the continent. 随着白昼的缩短,南极大陆变得越来越冷
Now they turn, blasting air from their blowholes, and ascend towards their prey. 现在座头鲸转身 利用呼吸孔吐气 喷向猎物
The thaw unlocks sheltered bays that provide refuge from the relentless battering of the Southern 0cean. 解冻后出现一些风平浪静的海湾 可以躲避南极洋无情的风浪
First, though, valuable nesting places must be defended from property thieves. 不过先得保护好来之不易的筑巢地 免得被其他鸟类占据
Antarctic waters are so rich that visitors come from far and wide to harvest them. 南极富饶的海水吸引着千里之外的客人来觅食
Away from these rapids flat lizard populations are found much smaller numbers. 在远离这些急流的地方 扁石蜥的数量则要少得多
Each day blackfly rise from turbulent stretches of the river. 每天 成千上万的蚋从奔腾的河水中羽化
the lizards move away from their cracks 蜥蜴离开它们藏身的岩缝