Without its solid platform, they can't hunt the seals they need in order to survive. 没有坚实的冰作为平台, 北极熊就不能猎捕它们赖以生存的海豹
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
in this dangerous world of ice. 要保护好自己的幼仔 母熊必须施展出所有的本领
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
A calf has been left behind in the panic. 它们在慌乱之中留下一头小牛
With each passing day, the sun climbs higher in the sky 随着时间一天天过去,天上的太阳升得越来越高
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
Even in spring, winds chill to the bone. 即使是春天 仍然寒风彻骨
The calf must stay close to its mother to avoid getting lost in the sudden blizzard. 小牛必须紧跟着母亲 才能避免在突如其来的暴风雪中迷路
In the Arctic, any breach in the icy barrier can be a lifeline. 在北极 每一处破冰的地方都是一条生命线