Ledbury Shales

例句：

1. 1. The Ledbury Shales are a rich source of minerals.
   莱德伯里页岩是丰富的矿物来源。
2. 2.The geologists were studying the Ledbury Shales for clues to the past.
   地质学家正在研究莱德伯里页岩以寻找过去的迹象。
3. 3.The Ledbury Shales contain traces of ancient life.
   莱德伯里页岩含有古代生命的踪迹。