A coneshaped area is an easy way to pick anything that a viewer can see.
而锥形的区域更易于选中观察者能够看到的任何东西。
2
There are classic cone-shaped ones and also volcanoes in the shape of a puddle or a lake with a blowing bubble in the middle.
有经典的锥形火山，也有形如水坑或湖泊、中心冒泡的火山。
3
The current stratovolcano-a cone-shaped volcano built from successive layers of thick lava flows and eruption products like ash and rock fragments-is built on top of an older stratovolcano.