cone of depression cone

例句：

1. 1. The stone is a cone-shaped rock.
   这块石头是一个圆锥形的岩石。
2. 2. The cone of depression is the point where the light rays converge.
   圆锥形凹陷是光线汇聚的地方。
3. 3. The cone of depression is a mathematical concept used to describe the shape of a cone when viewed from above.
   圆锥形凹陷是一个数学概念，用于描述从上方观察圆锥的形状。