生锈

The rain will rust the iron roof.

雨水会使铁皮屋顶生锈。

A zinc coating is applied to the steel for rust protection.

镀锌层是用来防止钢铁生锈。

My bike has rusted and needs oil.

行车生锈了, 需要上油。

The technique of comprehensive cocooning can keep the cocooned from rusting for 2-5 years.

综合封存技术以保证被封存件2～5年不生锈。

Iron is apt to rust.

铁易生锈。

The knife got rusty.

生锈了。