The United Nations Children's Fund is working to improve the lives of children around the world.

This city is equipped with tactile paving blocks for the visually impaired, which help them move around.

His movement was very fast.

He is researching on the pathogenesis and treatment of early-onset diabetes.

This area is rich in bedded cupriferous iron sulphide deposits.

Fumiko wrote him a letter.

We decided to explore the cave.