Polar bears living in a large southern edge of the Arctic pack ice zone.
北极熊生活在有大片浮冰的北极南部边缘地带。
Perovich was chief scientist on Ice Station SHEBA, a yearlong drift of an icebreaker frozen into the Arctic pack ice.
裴洛维奇也是席巴海冰研究站的首席科学家，他搭乘的破冰船与北极浮冰冻结在一块儿，一起漂流了一年。
The Yamal is one of Russia's biggest, most powerful icebreakers, and one of the few ships in the world capable of cutting through the thick Arctic pack ice.
Yamal是俄罗斯大型，动力最强的破冰船之一，是有能力破开北极厚厚的冰层通行的少数船只之一。
As the Arctic ice pack spread southward, Norse voyages to the west were rerouted into the open Atlantic, then ended altogether.
由于北极的大片浮冰向南移动，挪威人的航行路线由向西航行改成了向开阔的大西洋航行，后来向西的航行整个都终止了。
Alaska's walrus, especially breeding females, in summer and fall are usually found on the Arctic ice pack.
阿拉斯加地区的海象——尤其是正处于繁殖期的雌海象，在夏秋季节通常活跃在北极的大片浮冰上。
Jeannette became locked in the ice pack above Siberia. It drifted in the Arctic for 21 months, but was eventually crushed by the pressure, and sank on June 13, 1881.
那是1879年，美国船只吉内特号困在了西伯利亚上方的冰棚里，并在北冰洋里漂浮了21个月，最后由于抵受不住压力而破裂并于1881年6月沉没。
Jeannette became locked in the ice pack above Siberia. It drifted in the Arctic for 21 months, but was eventually crushed by the pressure, and sank on June 13, 1881.
那是1879年，美国船只吉内特号困在了西伯利亚上方的冰棚里，并在北冰洋里漂浮了21个月，最后由于抵受不住压力而破裂并于1881年6月沉没。
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