presentation  
noun uk/ˌprez.ənˈteɪ.ʃən/ us/ˌprez.ənˈteɪ.ʃən/
  (EVENT)         
 B1 [ C ]报告,演讲,陈述 
a talk giving information about something
  The speaker gave an interesting presentation on urban transport. 演讲者就城市交通发表了有趣的谈话。 
 B2 [ C ]授予,颁发 
an occasion when prizes, qualifications, etc. are formally given to those who have won or achieved them
  The presentation of prizes and certificates will take place in the main hall. 奖品和证书的颁发仪式将在大厅举行。 
 - More examples
 - The presentation was a collaborative effort by all the children in the class.
 - The charity invited the press to a presentation of its plans for the future.
 - The magazine asked its readers to send in their comments about the new style of presentation.
 - Jenny's retiring and I think there's going to be a small presentation this afternoon.
 - Graduates must be in full academic dress at the presentation of certificates.
 
  (APPEARANCE)      
C2 [ U ]外观;呈现方式;外貌 
the way something looks when it is shown to other people, or the way someone looks
  Presentation is important if you want people to buy your products. 如果想要人们购买你的产品,包装非常重要。