It protects the metal from theactions of salty spray and oxygen and the bridge will last a very long time.

这能保护铁不受氧气和盐雾的氧化，铁桥的使用寿命也更长。

youdao

It protects the metal from theactions of salty spray and oxygen and the bridge will last a very long time.

这能保护铁不受氧气和盐雾的氧化，铁桥的使用寿命也更长。

youdao