petroliferous shale

例句：

1. 1.The oil shale is a valuable resource for energy production.
   油页岩是能源生产的宝贵资源。
2. 2. The extraction of oil from the petroliferous shale has become a major industry in many countries.
   从含油气页岩中提取石油已成为许多国家的主要产业。
3. 3. The petroliferous shale formations are found in many parts of the world, including China.
   在世界许多地方，包括中国，都发现了含油气页岩层。