incumbent

noun

1. the official who holds an office

Synonym: officeholder

adj

1. currently holding an office

e.g. the incumbent governor

2. necessary (for someone) as a duty or responsibility
morally binding

e.g. it is incumbent on them to pay their own debts

3. lying or leaning on something else

e.g. an incumbent geological formation

1. 现任官员;在职官员
An incumbent is someone who holds an official post at a particular time.

e.g. In general, incumbents have a 94 per cent chance of being reelected.
通常现任官员有 94% 的几率会再次当选。

2. 成为责任的;义不容辞的;必须履行的
If it is incumbent upon you to do something, it is your duty or responsibility to do it.

e.g. It is incumbent upon all of us to make an extra effort.
我们所有人都必须加倍努力。

1. 现任者,在职者：Footage:电影胶片 | Incumbent:现任者,在职者 | Military Chief:军事最高统帅

2. 在职者,现任者：recumbent 靠着的, 斜躺着的, 不活动的, 休息的 | incumbent 在职者,现任者 | suppliant 恳求者, 哀求者

3. 职责所在的：incumbency 责任 | incumbent 职责所在的 | incumber 妨害