English主要词典
observer
Universal Words
noun
1 a person who watches sb/sth:
To the casual observer, the system appears confusing. * According to observers, the plane exploded shortly after take-off. * Most art forms require a contribution from the observer.
2 a person who attends a meeting, lesson, etc. to listen and watch but not to take part:
A team of British officials were sent as observers to the conference.
3 a person who watches and studies particular events, situations, etc. and is therefore considered to be an expert on them:
a royal / political observer * Observers noted an absence of the violence which had been a feature of previous elections.