如果冰继续融化,有一天北极熊可能就不复存在了。
If the ice keeps becoming water, one day there might not be any polar bears.
有一天,月亮姐姐与安娜来到了北极。
1969年的第一天,北极的高空上,两位英国文学教授正以每小时1200英里的相对速度相互靠近。
High, high above the North Pole, on the first day of1969, two professors of English literature approached each other at a combined velocity of 1,200 miles per hour.
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