Our school has introduced a new PA system.

The filesystem of my computer has broken down.

His nature is very kind.

Detailed information is needed to understand the nature of that project.

I was moved by his sincerity.

His nature is very kind.

The automotive navigation system in my car has downloaded the latest map data.

Geographic Information Systems are very useful tools for map making and spatial data analysis.

Microorganisms are one of the basic forms of life.

Protists are single-celled organisms that live in water.