The rain will rust the iron roof.

雨水会使皮屋顶。

My bike has rusted and needs oil.

我的自行车了, 需要上油。

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

镀锌层是用来防止钢的。

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。

Iron is apt to rust.

易。

The knife got rusty.

这把刀了。