| environ. |
Antarctica A continent lying chiefly within the Antarctic Circle and asymmetrically centered on the South Pole: it consists of an ice-covered plateau (some 95 percent of Antarctica is covered by an icecap averaging 1,6 km in thickness), 1800-3000 m above sea level, and mountains ranges rising to 4500 m with some volcanic peaks; average temperatures all below freezing and human settlement is confined to research station (主要位于南极圈内的大陆，不太对称地以南极为中心：由一个高于海平面1,800-3,000公尺，为冰层覆盖着的高原(南极洲有95%的部分被平均1.6 km厚的冰帽覆盖着)，其高达4,500公尺，包括一些火山顶的山脉所组成；平均温度低于冰点，人类的生活只局限在研究站内。) |
