/prɪˈzaɪ.dɪŋ/
to lead or be in charge of a meeting, ceremony, etc. 主持(会议、仪式等);担任(会议)主席
the presiding judge
首席法官
~ at/over sth
They asked if I would preside at the committee meeting.
他们问我是否会主持委员会会议。

figurative
The party presided over one of the worst economic declines in the country’s history (= it was in power when the decline happened).
该党执政时期,国家经历了历史上最严重的经济衰退。