铁锈

zhè xiē gōng jù rú guǒ cháng qī bù yòng huì zhǎng tiě xiù ér sǔn huài

这些工具如果长期不用会长铁锈而损坏。

The tools will corrode with rust if never used.

tiě qì cháng qī bù yòng huì zhǎng tiě xiù

铁器长期不用会长铁锈。

Iron tools will corrode with rust if never used.

cā diào tiě xiù

擦掉铁锈

scour off rust

shēng tiě xiù

生铁锈

be in rust

tiě hé shuǐ hé kōng qì fā shēng fǎn yìng chǎn shēng tiě xiù

铁和水和空气发生反应产生铁锈。

Iron reacts with water and air to produce rust.