ice mantle

例句：

1. 1. The glacier is slowly moving towards the sea.
   冰川正在缓慢地向海移动。
2. 2. The ice sheet is a major source of fresh water in the region.
   冰盖是该地区的主要淡水来源。
3. 3. The ice cap is visible from space, providing a stunning view.
   冰帽从太空可见，提供了令人惊叹的景色。