redundant term

例句：

1. 1. The report is redundant; it repeats information thathas already been covered in previous sections.
   这份报告是多余的，它重复了已经在前面章节中讨论过的信息。
2. 2. The company's decision to invest in new technologywas a redundant expense.
   公司决定投资新技术是一个不必要的开支。
3. 3. Theprofessor's lecture wasredundant; he couldhave covered the same material in ashorter session.
   教授的讲座是多余的；他可以用更短的时间覆盖同样的材料。