| 单词 | 对称中心 |
| 释义 | 〔Antarctica〕A continent lying chiefly within the Antarctic Circle and asymmetrically centered on the South Pole. Some 95 percent of Antarctica is covered by an icecap averaging 1.6 km (1 mi) in thickness. The region was first explored in the early 1800's, and although there are no permanent settlements, many countries have made territorial claims. The Antarctic Treaty of 1959, signed by 12 nations, prohibited military operations on the continent and provided for the interchange of scientific data.南极洲：主要位于南极圈内，以南极为不对称中心的大陆。约百分之九十五的地方被平均厚度为1.6公里（1英里）的冰层覆盖。该地区首次在19世纪初被勘察，尽管没有永久性居民区，很多国家都提出了领土要求。由十二个国家于1959年签订的《南极公约》，禁止在南极洲进行军事行动，提供并交换科学考察数据 |
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