glaciers
A glacier is an extremely large mass of ice which moves very slowly, often down a mountain valley.
University of Alaska scientists report that the state's glaciers are melting faster than expected.
阿拉斯加大学的科学家指出,该州的冰川正在以快于预期的速度融化。
Twenty thousand years ago, the last great ice age buried the northern half of Europe under a massive glacier.
在两万年前最后的大冰川时期,欧洲的北半部被埋到了一块巨大的冰川之下。