revolve around somebody/something ( also revolve round somebody/something British English ) phrasal verb ( see also ↑ revolve )
1 . [not in progressive] to have something as a main subject or purpose:
Jane’s life revolves around her children.
The argument revolved around costs.
She seems to think that the world revolves around her (=that she is the only important person) .
2 . to move in circles around something:
The moon revolves around the Earth.