角岩

例句：

1. 1. The angular shape of the rock is due to its formation in a crevice.
   这种岩石的棱角形状是由于它在裂缝中形成的。
2. 2. The geologist found evidence of ancient rivers cutting through the rock.
   地质学家发现了古代河流穿过岩石的证据。
3. 3. The angularity of the rock makes it difficult to move around.
   这种岩石的棱角使得它难以移动。