glacial erratic boulder

例句：

1. 1.The glacier has carved out some of the most impressive landscapes in the world.
   冰川已经雕刻出了世界上一些最令人印象深刻的景观。
2. 2. This glacier boulder is a rare find in this region.
   这块冰川岩块是这个地区罕见的发现。
3. 3. The glacier boulders are being studied for their potential as building materials.
   冰川岩块正在被研究，以确定它们作为建筑材料的潜在价值。