proglacial lake

例句：

1. 1. The proglacial lake is arare and beautiful natural wonder.
   这个冰下湖是一个罕见而美丽的自然奇观。
2. 2.The scientists are studying the formation of proglacial lakes in the area.
   科学家们正在研究该地区冰下湖的形成。
3. 3. Proglacial lakes are formed when glaciers retreat and expose underground water tothe surface.
   冰下湖是在冰川后退并暴露出地下水到表面时形成的。