Glaciers are slowly moving masses of ice that have accumulated on land in areas where more snowfalls during a year than melts.
冰川正在缓慢地移动大量的冰，这些冰是在每年降雪量大于融化量的地区，在陆地上累积起来的。
Last time, we started to talk about glaciers and how these masses of ice form from crystallized snow, and some of you were amazed at how huge some of these glaciers are.
上次我们开始讨论了冰川以及这些大型冰块是如何从结晶雪中形成的，你们中的一些人对这些冰川的巨大感到惊讶。
Glaciers may form in permanently cold areas, and these slowly moving masses of ice cut out valleys, carrying with them huge quantities of eroded rock debris.
冰川可能形成于长期寒冷的地区，而这些缓慢移动的冰块切割了山谷，带走了大量被侵蚀的岩石碎片。
The port was blocked in by heavy masses of ice.
港口为大量冰块所封冻。
The harbour was blocked in by floating masses of ice.
大块大块的浮冰把港口堵塞了。
These huge, slow-moving masses of ice cover about seventy-five thousand square kilometers.
这些庞大的，移动缓慢的巨大冰块覆盖了大约七万五千平方公里。
These huge, slow-moving masses of ice cover about seventy-five thousand square kilometers. About one hundred thousand of these rivers of ice flow down mountains.
这些巨大的、缓慢流动的冰河，其覆盖面积达75000平方公里，在这些冰河中大约有十万条冰河流下山。
Without those masses of cooling sea ice, warm air brought to the Arctic can penetrate further inland than it ever did before.
如果没有这些大量冷却的海冰，被带到北极的暖空气可以比以前更深入渗透到内陆。
In the future, perhaps dangerous masses of snow and ice can be found and removed before they take human lives.
在未来，也许危险的大块冰雪可以被发现并在它们夺走人类生命之前被移除。
Most of the ice loss is coming from the Canadian Arctic Archipelago, Alaska, Patagonia, the Himalayas, and the smaller ice masses surrounding the main Greenland and Antarctic ice sheets.
加德勒补充到，“它们主要来自于加拿大北极群岛、美国阿拉斯加、南美洲巴塔哥尼亚和喜马拉雅山脉的冰川，以及格陵兰和南极冰盖附近的一些小规模的冰川。”
This astronaut photo shows two major valley glaciers: large masses of slowly flowing ice and entrained debris that move downhill, carving out wide valleys.
这张由宇航员拍摄的照片展示了两个主要的山谷冰川：几处缓慢流动的巨大冰块和被冰川夹带着沿坡而下的碎屑，勾勒出广阔的山谷景观。
The Arctic is an ocean covered with drifting packed ice and hemmed in by the land masses of Europe, Asia, and North America.
北极是一片海洋，为漂流的冰块所覆盖，四周被欧洲，亚洲和北美洲所包围。
There were fringes of ice along the sea margin, with drifting masses further out;
冰块环绕着海岸，再往外更有大块浮冰飘动着；
There were fringes of ice along the sea margin, with drifting masses further out;
冰块环绕着海岸，再往外更有大块浮冰飘动着；
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