He is an expert in dynamics.

He is an expert in dynamics, helping to solve complex problems in physics.

Understanding the principle of electromagnetic induction is very important in learning physics.

My father drives a truck.

The fire truck went into action because of the fire.

He publicly disclosed that he has a gender identity disorder.

The launch of intercontinental ballistic missiles has become an international issue.

If the motor nerves are damaged, you will lose control of your muscle movements.

His dynamic visual acuity as a baseball player is very excellent.

As the name suggests, chordates are a group of animals that have a notochord.