He spends a lot of time for peacekeeping.

We all wish for world peace.

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

My dream is to travel the world.

We always pay attention to the maintenance of this machine.

My new accessory case is very convenient.

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.