1 . 英汉互译
1. 膨胀与收缩 ________
2. 政治稳定 ________
3. warm substantially ________
4. 海洋生物 ________
5. 保护北极不被开发 ________
6. The Antarctic shows the way.   ________
7. race to claim the Antarctic continent ________
8. military installations ________
9. suspend their territorial disputes ________
10. territorial and military gain ________
11. 签署条约 ________