which is why little auks have kept the ability to fly. 所以小海雀仍然需要保持飞行能力
This is a disaster for polar bears. 对于北极熊而言 这是一场灾难
but the ice that has supported him all winter is rapidly disintegrating. 但是在冬天能够支撑它的冰面现在正迅速地解体
The seascape is in constant flux as broken ice is moved on by winds and currents. 海洋在不断地变迁, 破裂的冰块在风和洋流的作用下不停地移动着
The ice is becoming too weak to support a male polar bear. 冰面开始变薄 已经很难承受一只雄性北极熊的重量
This is a challenging time for the bear family. 对于北极熊一家来说 这是一个极富挑战性的时刻
It may look like fun but this is serious training for the task ahead. 可能看起来很好玩, 但这都是为马上来临的严峻挑战所做的训练
In the whiteout, the threat is almost impossible to detect, 在白茫茫的天气中 有危险也几乎不可能察觉到
But half a ton of mad hairy cow is not to be trifled with. 不过在半数是脾气暴躁的母牛面前不好硬来