someone who is appointed or elected to an office and who holds a position of trust
同义词：officer
the official who holds an office
同义词：incumbent
例句：
The rear benches in the House of Commons where junior members of Parliament sit behind government officeholders and their counterparts in the opposition party.
后座议员席英下议院后排座的议员席，议会中职位较低的成员坐在政府官员和对立党成员的后面
详细解释：
of.fice.hold.er n.（名词）One who holds public office.公务员：一个有公职的人