translation.en: The North Polar ice cap is the same size geographically -- doesn't look quite the same size -- but it is exactly the same size as the United States, minus an area roughly equal to the state of Arizona.
translation.zh: 北极冰盖的地理面积 虽然看起来不太吻合， 但实际上正好等于美国本土的面积 减去亚利桑那州的大小。