Are merging together and burrowing through the surface. 汇集在一起 在冰面钻出洞穴

372. The ice cap has begun to melt at a speed...
     冰冠正在以10年前最悲观的科学家
373. That even the most pessimistic scientists did not envision 10 years ago.
     都没有预计到的速度融化
374. More and more of these glacier-fed rivers...
     越来越多的这种冰川河
375. Are merging together and burrowing through the surface.
     汇集在一起 在冰面钻出洞穴
376. It was thought the water would freeze in the depths of the ice.
     过去人们认为这些水会在冰川底部冻结
377. On the contrary, it flows under the ice,
     相反的 这些水会在冰川底部流动
378. Carrying the ice sheet into the sea,
     带着冰川流向大海

来自《家园 第二部分 Home Part2》第 375 行