single cell box girder

例句：

1. 1.The engineer designed a single-cell box girder to support the weight of the building.
   工程师设计了一个单细胞盒子梁来支撑大楼的重量。
2. 2. The construction crew used the single-cell box girder to reinforce the foundation of the new bridge.
   施工队使用单细胞盒子梁加固了新桥的基础。
3. 3. The single-cell box girder was crucial in ensuring the stability of the bridge during construction.
   单细胞盒子梁在建设过程中确保桥梁稳定性至关重要。