plinth stone

例句：

1. 1. The plinth stone is the first layer of the building's foundation.
   基座石是建筑地基的第一层。
2. 2. The builders carefully placed the plinth stone to ensure stability.
   建筑工人小心地放置基座石以确保稳定性。
3. 3. The plinth stone was used to support the weight of the roof.
   基座石被用来支撑屋顶的重量。