He spends a lot of time for peacekeeping.

The United Nations is an organization that maintains world peace and security.

We all wish for world peace.

My new accessory case is very convenient.

We always pay attention to the maintenance of this machine.

My dream is to travel the world.

We need moderate exercise to maintain our health.

I bought a new accessory case.

My Japanese language teacher is very strict.

This park is very peaceful, and you can relax.