oxidize|oxidized|oxidizes

铁在潮湿的空气中容易氧化生锈。

Iron tends to ___oxidize and rust in humid air.

铁钉暴露在潮湿的空气中很快就被氧化生锈了。

The iron nail quickly ___oxidized and rusted when exposed to the damp air.

铁在潮湿的空气中会氧化，形成铁锈。

Iron ___oxidizes in moist air, forming rust.