depth of vault

例句：

1. 1.The engineer calculated the depth of the vault to ensure stability.
   工程师计算了拱顶的深度以确保稳定性。
2. 2. The arch was designed to withstand the weight of the vault.
   这个拱设计用来承受拱顶的重量。
3. 3. The vault is made of reinforced concrete and is over 100 meters deep.
   这个拱是用钢筋混凝土建造的，深度超过100米。