semitelinite

例句：

1. 1. The mineral deposit is composed of semi-crystalline rocks.
   这个矿床由半晶质岩组成。
2. 2.The geologist found that the semi-crystalline rocks were formed by volcanic activity.
   地质学家发现，这些半晶质岩是由火山活动形成的。
3. 3. The study of semi-crystalline rocks is important for understanding the Earth's crust.
   研究半晶质岩对于理解地球地壳非常重要。