polycentered arch

例句：

1. 1. The construction of the polycentered arch is a complex engineering task.
   建造多中心拱门是一项复杂的工程任务。
2. 2.The polycentered arch has been a topic of interest in archaeology for decades.
   多中心拱门是考古学几十年来的一个热门话题。
3. 3. The polycentered arch is a symbol of architectural beauty and structural strength.
   多中心拱门是建筑美学和结构强度的象征。