地理漫步·世界地理英语30篇（8）
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Glaciers Move Slowly, Shape Deep Valleys
冰川缓慢移动，塑造深谷地貌
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Glaciers are giant rivers of ice that flow slowly.冰川是缓慢流动的巨大冰河。
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They grind rock and carve U-shaped valleys over time.它们长期研磨岩石，雕琢出U形谷。
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Many mountains in Alaska and the Alps hold active glaciers.阿拉斯加和阿尔卑斯山脉的许多山峰上分布着活跃冰川。
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Melting glaciers feed major rivers like the Ganges and Indus.融化的冰川补给恒河、印度河等主要河流。
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Global warming makes glaciers shrink faster than before.全球变暖导致冰川消退速度加快。
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Their retreat changes water supply for millions of people.冰川退缩改变了数百万人的水源供应。
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Glaciers store about 69% of Earth's fresh water.冰川储存了地球约69%的淡水。
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Scientists watch them closely to understand climate change.科学家密切监测冰川以理解气候变化。