/prɪ'zaɪd; prɪ`zaɪd/
v
1 [I, Ipr] ~ (at sth) be chairman (at a conference, meeting, etc) （在会上）担任主席; 主持（会议等）
*the presiding officer 主持会议的官员
* Whoever presides will need patience and tact. 无论谁作主席, 都需既要有耐性, 又要机敏老练.
* The Prime Minister presides at meetings of the Cabinet. 首相主持内阁会议.
2 (phr v) preside over sth
(a) be head or director of sth 掌管或领导某事物
*The city council is presided over by the mayor. 市政委员会由市长领导.
(b) control or be responsible for sth 管理某事物; 对某事物负有责任
*The present director has presided over a rapid decline in the firm's profitability. 现任领导对公司利润的急剧下降负有责任.

v [I]
[Date: 1600-1700; Language: Latin;Origin: praesidere 'to sit in front of, guard, preside over', from sedere 'to sit']
to be in charge of a formal event, organization, ceremony etc
　I shall be pleased to preside at your meetings.
　Mr Justice Waller, presiding judge for the north east
preside over [preside over sth] phr v
to be in a position of authority at a time when important things are happening
　The government seemed to be presiding over large-scale unemployment.
to be the head of a company or organization
　Finch presided over the company for 30 years.
to be in charge of a meeting or activity
　The chairman will preside over an audience of architects and developers.