glacial sands

例句：

1. 1. The glacier has been melting due to global warming.
   由于全球变暖，冰川正在融化。
2. 2.The glacier is a fascinating natural wonder that attracts tourists from all over the world.
   冰川是一个令人着迷的自然奇观，吸引了来自世界各地的游客。
3. 3.The glacier's retreat is a cause for concern as it threatens the local ecosystem.
   冰川的退缩是一个令人担忧的原因，因为它威胁到了当地的生态系统。