observer

• 指观察、注意或跟踪某人或某事物的人，通常是有系统地进行或作为职业。也可指目击者或旁观者。

A noun referring to a person who watches, notices, or monitors something or someone, often in a systematic or professional capacity.

1. B1formal

   A person who watches or notices something, often in a professional or systematic way.

   观察者

   • The observer noted the behavior of the birds.
   • She acted as an observer during the election.
   • A trained observer can spot subtle changes in the environment.

   同义词beholderbystanderlooker-ononlookerspectatorviewerwatcherwitness

2. Commentator or analystB2formal

   A person who makes comments or analyses about events, trends, or situations.

   评论员或分析者

   • Political observers predicted the outcome of the vote.
   • The economic observer wrote a detailed report on the market.
   • Observers noted a shift in public opinion.

   同义词analystcommentatorcriticpunditreviewer