krennerite

例句：

1. 1.The krennerite formation is a unique geological feature in the area.
   克伦纳石是一种独特的地质特征。
2. 2. The krennerite was discovered by an archaeologist during a dig in the 19th century.
   克伦纳石是在19世纪一次挖掘中被一位考古学家发现的。
3. 3. The krennerite has been studied for its potential applications in renewable energy.
   克伦纳石因其在可再生能源方面的潜力而被研究。