hemispherical shell

例句：

1. 1. The building is shaped like a hemispherical cone.
   这座建筑的形状像半球形的圆锥。
2. 2.Hemispheres are the two largest and most populous continents in the world.
   半球是世界上面积最大、人口最多的两个大陆。
3. 3. The hemispherical shape of the planet Earth allows it to rotate around its axis.
   地球的半球形结构使其能够围绕其轴旋转。