This incubator is an essential device for protecting the lives of newborns.

He is a second-year high school student.

In this situation of the game of Go, the black stone has lost its liberty.

He hyperventilated due to tension.

They are working in sync, as if they are breathing together.

Training the respiratory muscles is very important for aiding breathing.

He was taken to the hospital because of dyspnea.

We enjoy picnicking in this park year-round.

He was taken to the hospital for an acute myocardial infarction.

My father will turn 61 years old this year.