India oil stone

例句：

1. 1. The Indian oil stone is a valuable resource for the local economy.
   印度石油石是当地经济的重要资源。
2. 2. The Indian oil stone has been used in traditional medicine for centuries.
   印度石油石在传统医学中被使用了几个世纪。
3. 3. The Indian oil stone is mined from deep within the earth's crust, and its properties have been studied extensively.
   印度石油石是从地球地壳深处开采的，其性质已经被广泛研究。