bolted and welded steel bridge

例句：

1. 1. Thenew bridge is a marvel of engineering, with bolted and welded steel structures that span the river.
   这座新桥是工程奇迹，有螺栓连接和焊接的钢结构横跨河流。
2. 2.The engineers carefully designed the bridge to be both strong and safe, using bolted and welded steel for its construction.
   工程师们仔细设计了这座桥，使其既坚固又安全，使用了螺栓连接和焊接的钢进行建造。
3. 3. The bridge's durability is a testament to the quality of the materials used in its construction, which includes bolted andwelded steel components.
   这座桥的耐用性证明了其建造材料的质量，这些材料包括螺栓连接和焊接的钢部件。