superfluous [su:ˈpɜ:fluəs]

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adj.过多的，过剩的，多余的

more than is needed or wanted

She fined away superfluous matter in the design. 她删去了这图案中多余的东西。
That request seemed superfluous when I wrote it. 我这样写的时候觉得这个请求似乎是多此一举。