The Arctic ice cap is melting. 北极的冰川开始融化

331. It's happening fast- very fast.
     事态发展地非常迅速
332. The northwest passage that connects America, Europe and Asia...
     经过北极地区 连接欧亚大♥陆♥和美洲大♥陆♥
333. Via the pole is opening up.
     的西北通道已经开始断裂
334. The Arctic ice cap is melting.
     北极的冰川开始融化
335. Under the effect of global warming,
     受全球变暖的影响
336. The ice cap has lost 40% of its thickness in 40 years.
     冰冠在40年间融化了40%
337. Its surface area in the summer shrinks year by year.
     冰冠的面♥积♥每年夏天都在缩减

来自《家园 第二部分 Home Part2》第 334 行