clay slate

例句：

1. 1.The clay slate is used to make pottery.
   这种粘土板岩用来制作陶器。
2. 2.The slate roof has a unique texture that adds character to the house.
   石板屋顶具有独特的纹理，给房子增添了特色。
3. 3.The slate quarry is located in the mountains, providing a beautiful backdrop for the village.
   石板采石场位于山中，为村庄提供了美丽的背景。