revolve around

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

围绕, 以...为中心

to have as a main subject or purpose

:
The discussion revolved around the new project.
讨论围绕着新项目展开。
His life seems to revolve around his children.
他的生活似乎围绕着他的孩子。