The chief scientists are conducting groundbreaking research.

The chief cells in the stomach secrete pepsinogen.

The chiefs of party are responsible for managing the project.

The chief mates are responsible for the navigation and safety of the ship.

The police chiefs held a meeting to discuss crime prevention strategies.

The tribal chiefs gathered to discuss important matters.

The Editor-in-Chief of the magazine is responsible for overseeing the content and making final decisions.

The Editors-in-Chief of the magazine are responsible for overseeing the content and ensuring its quality.

He is the champion-in-chief of the competition.

He was hailed as the champion in chief for his outstanding leadership.