Fish use their respiratory organs to take in oxygen underwater.

He can take in new information quickly.

His hobby is underwater photography.

I was born and raised in a town called Suichu.

We cannot live without oxygen.

I will work using this laptop.

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.

I buy fresh fish at the fish market every week.

He took a deep breath and regained his composure.