形容词
中文翻译：多余的
同义词：
['superfluous', 'superfluous', 'extraneous']
例句：
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1. The extraneous information was not useful to the discussion.
这些额外的信息对讨论没有帮助。
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2. The extraneous noise made it difficult for me to concentrate.
额外的噪音让我难以集中注意力。
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3. The extraneous expenses were a burden on our budget.
额外的开支对我们的预算造成了负担。