observer /əbˈzɜːvə/ CET4 TEM4

• 1. 

  N-COUNT You can refer to someone who sees or notices something as an observer. 目击者

  例：

  A casual observer would have taken them to be three men out for an evening stroll.

  一位不经意的目击者会认为他们是晚上出来闲逛的3个男人。

• 2. 

  N-COUNT An observer is someone who studies current events and situations, especially in order to comment on them and predict what will happen next. 观察家 [journalism]

  例：

  Observers say the events of the weekend seem to have increased support for the opposition.

  观察家们说周末事件似乎增加了对反对派的支持。

• 3. 

  N-COUNT 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 to tell other people about it. 观察员

  例：

  The president suggested that a UN observer should attend the conference.

  大会主席建议应该有一名联合国观察员参加该会议。