He did his best to solve the problem.

She is the matriarch of our family, making all the decisions.

It's better to leave the tuning of the piano to a professional.

I was asked to tune the piano.

In this factory, butterfly valves are mainly used.

This plan is like killing two birds with one stone, it can save both time and money.

I heard the cry of the Hororo bird.

He underwent surgery on his jejunum.

The doctor listened to my heart sound using a stethoscope.

I added his contact information to my address book.