He understood that it was necessary to obey the prison rules.

My son has become a doctor.

This building is designed to withstand lateral pressure during an earthquake.

When the engine's piston moves, the car moves forward.

He was hospitalized for a blockage in his heart.

It is important to exercise every day and maintain good health.

He is leading a very healthy life.

An earthquake early warning was broadcasted on TV.

He is working as an agent for the Central Intelligence Agency.

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