stiff dowel bar

例句：

1. 1.The carpenter used a stiff dowel bar to join the wooden boards together.
   木匠用一根硬直的木棒将木板连接起来。
2. 2. The construction worker used a stiff dowel bar to support the roof of the building.
   建筑工人用一根硬直的木棒支撑大楼的屋顶。
3. 3.The engineer used a stiff dowel bar to reinforce the structure of the bridge.
   工程师用一根硬直的木棒加固桥梁的结构。