His clear and penetrating thought greatly contributed to problem solving.

This gate is made of wrought iron.

This pig iron is of high quality and is ideal for steel production.

It was found out that he is suffering from fascioliasis.

The sheep liver fluke is a parasite that lives in the liver of sheep.

The horse needs a new horseshoe.

My father collects scrap iron and recycles it.

This scrap iron can be recycled.

In my house, it is a custom to brew tea in a tetsubin.

He tried to open the door with an iron pipe.