Once upon a time, there lived an old man and an old woman in a village.

Beautiful landscapes enchant people everywhere in the world.

Protein-degrading enzymes play a role in breaking down unnecessary proteins in the body.

This compound has a tetrahedral molecular geometry.

The Koizumi Shinjiro structure brought a new wind to Japanese politics.

This mineral is called anhydrite.

Maintaining oral hygiene is very important for overall health.

He is working at the pithead.

We steered the ship towards the harbor entrance.

He practices every day to improve his sailing skills.