iron bound block

例句：

1. 1. The construction workers were forced to use the iron bound block as a temporary shelter.
   建筑工人被迫使用铁板作为临时避难所。
2. 2. The engineer carefully placed the iron bound block in the center of the bridge.
   工程师小心翼翼地将铁板放在桥的中心。
3. 3. The heavy machinery used to move the iron bound block was very loud.
   用于移动铁板的重型机械非常吵闹。