形容词
中文翻译：多余的
同义词：
['superfluous', 'additional', 'inessential']
例句：
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1. The extra staff will help to reduce the workload on our team.
额外的员工将帮助我们减轻团队的工作负担。
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2. There are superfluous words in this sentence that can be removed.
这句话中有不必要的词汇可以删除。
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3. The manager decided to add an extra day to the workweek to accommodate the new hire.
经理决定在工作周中增加一天来适应新雇员。