observer
🇺🇸
/əbˈzɜːrvər/
🇬🇧
/əbˈzɜːvə(r)/
someone who watches something or someone
The observer watched the birds in the park.
观察者在公园里观察鸟类。
someone who attends an event to watch and listen but not participate
The observer sat quietly during the meeting.
观察者在会议期间安静地坐着。
an expert who watches and studies events to understand them
The weather observer recorded daily temperatures.
气象观察员记录了每日温度。