center pillar

例句：

1. 1. The center pillar of the building is made of steel.
   这座建筑的中心柱是用钢制成的。
2. 2. The pillars support the roof and hold up the ceiling.
   这些柱子支撑着屋顶并支撑着天花板。
3. 3. The pillars are visible from the street, providing a strong visual connection between the buildings.
   这些柱子从街道上可见，为建筑物之间提供了强烈的视觉联系。