Phosphorous acid plays an important role in chemical reactions.

My father works in forestry.

When the summer wind blows, you can hear the sound of the windchime.

The wheel of the bicycle has punctured.

He gripped the steering wheel of the car and took a deep breath.

He is preparing to explore the Dark Continent.

It is believed that dark matter makes up most of the universe.

This scent comes from benzoin.

Anguilla is a beautiful island.

He chose euthanasia for his sick dog.