galvanizing

例句：

1. 1. The metal parts are now galvanized to prevent rusting.
   这些金属部件现在被镀锌以防止生锈。
2. 2. The old barn was galvanized to make it more durable.
   旧谷仓被镀锌以使其更耐用。
3. 3.The steel beams were galvanized before they were used in the construction.
   在建造之前，这些钢梁被镀锌了。