galvanized roofing bolt

例句：

1. 1. The roofers used galvanized bolts to secure the shingles.
   屋顶工人使用镀锌螺栓来固定瓦片。
2. 2. The metal was galvanized to prevent corrosion.
   这种金属被镀锌以防止腐蚀。
3. 3. The galvanized material is resistant to rust and corrosion.
   这种材料抗锈蚀和腐蚀能力强。