rhinolith

例句：

1. 1. The rhinoliths in the park are a popular attraction.
   公园里的岩溶石是受欢迎的景点。
2. 2.The geologist found several rhinoliths embedded in the soil.
   地质学家在土壤中发现了若干个岩溶石。
3. 3.The rhinoliths were formed millions of years ago by the weathering of limestone.
   这些岩溶石是由数百万年前石灰岩的风化形成的。