presideover与presideat的区别是什么

presideover释义：

主持；负责

例句：

The PM returned to Downing Street to preside over a meeting of his inner cabinet.

首相回到唐宁街去主持一场核心内阁会议。

presideat释义：

主持；负责

例句：

They asked if I would preside at the committee meeting.

他们问我是否会主持委员会会议。