runite

例句：

1. 1. The runite formations are a popular tourist attraction.
   红石形成物是一处受欢迎的旅游景点。
2. 2. The runite was used in ancient times as a building material.
   红石在古代被用作建筑材料。
3. 3.The runite formations have been found in many parts of the world.
   红石形成物在世界许多地方都有发现。