He likes repairing old locomotives.

I enjoyed a fun time at the amusement park with my family over the weekend.

Sputnik is the first artificial satellite.

He was born in an oblast of Russia.

He is the intellectual leader of our team, always providing new ideas.

He was promoted to the chief operating officer of the company.

He was appointed as the chief financial officer of our company.

Lithium aluminium hydride is necessary for this chemical reaction.

He is a world-renowned biologist.

He is the chief technical officer of our company.