名词短语
中文翻译：假定的平均数
同义词：
['average', 'mean', 'norm']
例句：
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1.The team's performance was below the assumed average.
团队的表现低于预期的平均水平。
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2.The new policy is designed to reduce the average number of accidents per year.
新政策旨在每年减少平均事故数量。
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3.The research suggests that the average age for retirement is increasing.
研究表明，退休的平均年龄正在上升。