rusting

n. 生锈
动词rust的现在分词

例句与用法：

Brass doesn't rust.

黄铜不生锈。

Iron reacts with water and air to produce rust.

铁与水和空气起化学反应而生锈。

Iron is apt to rust.

铁容易生锈。

If you don't paint those metal trimmings on your windows, they will soon rust away to nothing.

窗户上那些金属花边如不上油漆，很快就会生锈烂掉。