Rust was eating away the iron post.

铁锈腐蚀着铁柱。

youdao

For this is a young wood and the iron post is old.

因为这里是幼林，而铁柱是老的。

youdao

The dog is fastened to the post by an iron chain.

那条狗用铁索拴在柱子上了。

youdao

Traditional fingerpost signs usually consist of a cast iron post with black and white bands, and cast iron "fingers" giving directions.

BBC: Fingerpost sign

The feeble struggle of this authoritarian post-Soviet leader, who has ruled with an iron hand since 1989, against becoming the centre of a personality cult provides a diverting spectacle.

ECONOMIST: Still going strongman at 70

Archaeologists have also discovered the remains of a later Iron Age village which consists of a number of round houses defined by post holes in the ground.

BBC: Complete neolithic pot found in Didcot