We celebrate our wedding anniversary on the twelfth day of the month.

He goes to the gym every day to build his physical strength.

Smoking is prohibited in this park.

In this park, smoking is strictly prohibited.

The Internet of Things is an important technology in modern society.

A sphincter plays a role in opening and closing certain parts of the body.

This service is based on volume.

My duty is to make this project successful.

He played the leading role in the movie.

He played an important role in that war.