These permanent holes in the ice provide seafood throughout the winter. 这个长年不冻的水窟窿提供了整整一个冬天的食物
These can only be reached during a brief lull in the currents. 这个地方只有在洋流暂时停歇时才能吃到
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
but this bleak wilderness remains locked in ice. 但这片荒凉的无人区仍然是冰封的天地
the sun rises for the first time in months, 太阳在数个月的沉寂后第一次升起
and so provide shelter to those taking their turn in the middle. 以便保护轮流站在中间的企鹅
They lock together in tightly-packed huddles as they struggle to keep warm. 它们紧紧挤成包围圈以此取暖
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
In a matter of weeks, the continent effectively doubles in size. 几个星期之内, 整个南极大陆的面积将扩大为原来的两倍
teams of whales spiral round each other in close coordination. 座头鲸会共同配合 紧密协作