Moderate exercise and a balanced diet are important for maintaining the health of the respiratory system.

He is connected to a ventilator due to his severe condition.

He passed the lie detector test.

He is involved in the research of particle accelerators.

Seismologists use seismographs to accurately measure the magnitude of earthquakes.

He attacked the enemy using a flamethrower.

This filter helps to improve the sound quality.

This hospital has the latest defibrillator.

She is wearing braces.

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.