cupola spark arrester

例句：

1. 1.The cupola is a small dome that houses the clock.
   钟罩是一个小圆顶，里面放着时钟。
2. 2. The bell jar is used to contain liquids and solids.
   钟罩用来装液体和固体。
3. 3.The cupola is located on top of the building.
   钟罩位于建筑物的顶部。