revolve
verb [ I or T ] uk/rɪˈvɒlv/ us/rɪˈvɑːlv/
（使）旋转;（使）转动;（使）环绕，围绕
to move or cause something to move around a central point or line
The earth revolves around the sun. 地球围绕太阳转。
The gun turret revolved until the gun was aimed at the advancing soldiers. 炮塔旋转着，最后炮口瞄准了正在前进的士兵。
Synonym: orbit
Compare: spin verb (TURN)
Phrasal verb
revolve around someone/something 以…为中心；以…为主题；围绕…
to have someone or something as the main or most important interest or subject
The conversation revolved around childcare problems. 这次会谈的中心议题是儿童保育方面的问题。
His whole life revolves around football. 足球是他生活的中心。