kryolith

例句：

1. 1. Thegeologist found a kryolithin the riverbed.
   地质学家在河床上发现了一块基岩。
2. 2. Theancient civilization was built ona kryolith foundation.
   这个古代文明建立在基岩基础上。
3. 3.The kryolith formation is animportant part of the landscape.
   基岩形成是景观的重要组成部分。