My sense organ recognized his voice immediately.

This resistor is used to control the current.

This transformer is necessary for power supply.

The telephone transmitter is broken, and my voice doesn't reach the other person.

He used a syringe to inject the medicine.

He aimed at the target using the sight.

He used a spirit level to make the shelf level.

The ritual vessel was an important tool used in ancient ceremonies.

Let's use this strainer to remove the tea leaves.

He had a gun with a silencer.