pin truss

例句：

1. 1. The engineer used a pin truss to reinforce the weak spot in the wall.
   工程师使用一个桩架加固了墙的薄弱部分。
2. 2. The construction crew was using pin trusses to support the roof during the rainy season.
   施工队在雨季使用桩架支撑屋顶。
3. 3. The old house needed some repairs, and the builder used pin trusses to strengthen the structure.
   这所老房子需要一些修理，建筑商用桩架来加固结构。