While the female is still kept on land by her dependent cubs, 雌熊仍然在陆地上照顾小熊
Unlike Antarctica, the Arctic can be reached by land-based predators, 与南极不同, 陆基的掠食动物也可以到达这里
This may be a glimpse of the unstable future faced by this magnificent creature. 这种巨大生物的前途很不乐观
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
a permanent hole in the sea ice, kept open throughout the winter by strong ocean currents. 冰间湖是结冰的海洋上永久性的洞孔 因为有强大的洋流使它们冬天也不会冰封
the Arctic is a vast frozen sea surrounded by land. 北极是广阔的冰封海洋 被陆地包围
Abandoned by the sun, the males are left alone with their eggs 太阳已经完全消失,雄企鹅们与它们的蛋相依为命
an area sheltered by icebergs, trapped in the frozen ocean. 一个位于冰封的洋面上、到处冰山林立的地方