Propyne plays an important role in organic chemistry.

Proline is one of the components of proteins.

He is a famous author, and his works are loved by many readers.

He is an excellent doctor.

He likes to take a walk in the park at dusk.

He is known as an expert in criminology.

Well then, I'm off.

My spouse is a doctor.

He admitted that it is difficult to execute the plan, saying 'it is easier said than done.'

We should always remember the power of Kannon in difficult times.