This main road is convenient for commuting.

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.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

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.