He spends a lot of time for peacekeeping.

Representatives of the nations gathered for a conference to maintain peace.

We always pay attention to the maintenance of this machine.

He is a famous author and a person who is respected by many people.

Pigeons swarm in the park every day.

Every Friday, my friends gather at my house.

I wish for peace to come to the whole world.

We need moderate exercise to maintain our health.

He got an amazing victory by getting a 'peace', a no points hand in mahjong.

This park is very peaceful, and you can relax.