It could disappear before 2030. 并且很可能在2030年之前完全消失

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
338. It could disappear before 2030.
     并且很可能在2030年之前完全消失
339. Some predictions suggest 2015.
     也有人预言到2015年冰冠就会消失
340. Soon these waters will be
     不久之后 这些冰就会在
341. free of ice several summer months a year.
     夏天的几个月当中融化成水

来自《家园 第二部分 Home Part2》第 338 行