glacial alluvium

例句：

1. 1. The glacier's retreat has left behind a vast expanse of glacial alluvium.
   冰川的后退留下了广阔的冰川沉积物。
2. 2.This region is famous for its unique glacier alluvium formations.
   这个地区以其独特的冰川沉积物形成而闻名。
3. 3.The study of glacier alluvium provides insights into the geological history of the region.
   对冰川沉积物的研究为该地区的地质历史提供了见解。