revolve around

US /rɪˈvɑlv əˈraʊnd/
UK /rɪˈvɑlv əˈraʊnd/
"revolve around" picture
1.

中心となる, 〜をめぐる

to have as a main subject or purpose

:
The discussion revolved around the new project.
議論は新しいプロジェクトを中心に進められた
His life seems to revolve around his children.
彼の人生は子供たちを中心に回っているようだ。