The phrase "various sectors" refers to different areas or industries that exist in the world. It means different fields of work or types of businesses. Full definition
He also gained experience working in various sectors of education, always thinking about what he could do to change the course of action in the present for kids. (gse.harvard.edu)
Earn your first million, invest in various sectors of the economy. (andyemulator.com)
He currently acts for sports professionals in disciplinary and arbitration proceedings, as well as acting in contractual and regulatory disputes across various sectors of the sports industry. (squareonelaw.com)