repetition          
noun uk/ˌrep.ɪˈtɪʃ.ən/ us/ˌrep.əˈtɪʃ.ən/
C2 [ U ]重复;重做;重说 
the act of doing or saying something again
  His books are full of repetition. 他的那些书都是在翻来覆去写同样的东西。 
  [ C ]重现;重复;重做 
something that happens in the same way as something that happened before
  We want to prevent a repetition of last summer's fires, which destroyed more than 500,000 acres of land. 去年夏天的火灾毁了超过50万英亩地,我们要防止此类火灾再次发生。 
 - More examples
 - We hope to avoid a repetition of last year's fiasco.
 - We don't want a repetition of yesterday's scenes.
 - The job involved the endless repetition of two or three simple tasks.
 - Try to avoid unnecessary repetition when stating your points.
 - His speeches show a marked preference for repetition, that tedious rhetorical device.