岩石学家

例句：

1. 1. He is a renowned expert in the field of petrology.
   他是一位著名的岩石学专家。
2. 2. The team consists of several geologists who specialize in studying rocks.
   这个团队由几位专门研究岩石的地质学家组成。
3. 3. The discovery of new minerals has sparked interest among many geologists.
   新矿物的发现引起了许多地质学家的兴趣。