preside over something
phrasal verb with preside verb [ I ] usuk/prɪˈzaɪd/
掌管；主持（尤指正式会议或审判）
to be in charge of a situation or place
This government has presided over some of the most significant changes in education this century. 本届政府领导了本世纪教育方面的一些最重大的变革。
She has presided over the district during a period of unprecedented growth. 这一地区在她掌管期间经历了前所未有的增长。