polydisc

例句：

1. 1. The geometry of the polydisc is fascinating and complex.
   多面体的几何学既迷人又复杂。
2. 2.The polydisc is a common shape in architecture and engineering.
   多面体是建筑和工程中常见的形状。
3. 3. The polydisc was designed to improve efficiency in transportation systems.
   多面体的设计旨在提高运输系统的效率。