duplication/ˌdju:plɪˈkeɪʃn; ?@ ˌdu:pləˈkeɪʃn; ˌduplə`keʃən/ n[U]duplicating or being duplicated 复制; 重复 We must avoid wasteful duplication of effort. 我们必须避免无谓的重复劳动.
牛津英汉双解词典