prefractured rock

例句：

1. 1. The geologistfound the prefractured rock inthe area of the earthquake.
   地质学家在地震区域发现了预破裂岩石。
2. 2. The engineerused the prefractured rock toreinforce the foundation of the building.
   工程师使用预破裂岩石来加固建筑物的基础。
3. 3. Theprefractured rock was a valuableresource for the construction industry.
   预破裂岩石是建筑行业的重要资源。