阿拉斯加北坡油田的开发，以及阿拉斯加地区输油管道的建设，就是在新石油资源的勘探中涉及到巨额开支和巨大困难的例子。
The development of the oil field on the North Slope of Alaska and the construction of the Alaska pipeline are examples of the great expense and difficulty involved in new oil discoveries.
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。
Alaska's walrus, especially breeding females, in summer and fall are usually found on the Arctic ice pack.
从阿拉斯加东南海岸岛屿的洞穴中提取的化石的放射性碳年代测定法表明，在最后一个冰河时代，该地区至少有一部分保持无冰状态。
Radiocarbon dating of fossils taken from caves on islands along southeastern Alaska's coast suggest that at least a portion of the area was remaining ice-free during the last ice age.
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