缩写
中文翻译：不必要地
同义词：
['unnecessary', 'superfluous', 'redundant']
例句：
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1. The extra workload was unnecessary and caused stress.
额外的工作量是不必要的，导致了压力。
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2. The decision to invest in a new project was superfluous, as we already had all the resources we needed.
决定投资一个新项目是多余的，因为我们已经拥有了所需的所有资源。
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3. The redundancy of the system made it difficult for us to make changes without affecting everyone's work.
系统的冗余使得我们很难在不影响每个人的工作的情况下进行更改。