My older brother works as a systems engineer.

My computer needs a new operating system.

He is known as an excellent system operator.

My brother works as a systems analyst.

The new apartment is equipped with the latest unit kitchen.

He spends a lot of time for peacekeeping.

This shirt is made of chemical fiber.

He is an expert in fiber optics.

It is important to understand the importance of health.

Last night, I overate and suffered from indigestion.