galvanized insulator bolt with nut

例句：

1. 1.The metal parts were galvanized to prevent corrosion.
   这些金属部件被镀锌以防止腐蚀。
2. 2. The fence was galvanized to make it more durable.
   篱笆被镀锌以使其更耐用。
3. 3.Galvanized wire is used for electrical wiring in buildings.
   镀锌线用于建筑物的电气布线。