rust

/rəst/

a red or brown oxide coating on iron or steel caused by the action of oxygen and moisture

Chinese meaning: 铁锈；锈

The old iron gate was covered with rust after years of rain.

多年的雨水使旧铁门上布满了铁锈。

Regular painting can prevent rust from forming on metal surfaces.

定期涂漆可以防止金属表面生锈。