He spends a lot of time for peacekeeping.

We always pay attention to the maintenance of this machine.

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

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

Every Friday, my friends gather at my house.

Pigeons swarm in the park every day.

We need moderate exercise to maintain our health.

He is the representative of our team.

He represents our team.

This park is very peaceful, and you can relax.