liningless cupola

例句：

1. 1.The construction of this building has a liningless cupola at the top.
   这座建筑顶部有一个无衬砌的圆顶。
2. 2.The engineer designed the new bridge with a liningless cupola to enhance its aesthetic appeal.
   工程师设计了这座新桥，顶部有一个无衬砌的圆顶，以增强其美学吸引力。
3. 3.The museum's exhibit showcased a liningless cupola that was once used as a storage space.
   博物馆的展览展示了一个曾经用作储物空间的无衬砌圆顶。