galvanized mild steel round head machine screw

例句：

1. 1. This new building is made of galvanized steel.
   这座新建筑是用镀锌钢建造的。
2. 2. The car was covered in rust and needed to be galvanized before it could be sold again.
   这辆车被锈蚀覆盖，需要重新镀锌才能再次出售。
3. 3. The old barn was replaced with a new one made of galvanized metal.
   旧谷仓被一座用镀锌金属建造的新谷仓所取代。