N-COUNT
(監(jiān)督重大事件或局勢(shì)的)觀察員
An observer is a person who is sent to observe an important event or situation, especially in order to make sure it happens as it should, or so that they can tell other people about it.
例句
The president suggested that a UN observer should attend the conference.
總統(tǒng)建議聯(lián)合國(guó)應(yīng)派一名觀察員參加本次會(huì)議。