insulated bolt

例句：

1. 1. The engineer used an insulated bolt to secure the roof.
   工程师使用一个绝缘螺栓来固定屋顶。
2. 2.The construction workers were using insulated bolts to hold up the walls.
   建筑工人正在使用绝缘螺栓来支撑墙壁。
3. 3.The insulated bolts ensured that the structure was stable and safe.
   这些绝缘螺栓确保了结构的稳定性和安全性。