名词短语
中文翻译：组合估计方差
同义词：
['composite estimate of variance', 'combined estimate of variance']
例句：
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1. The team's performance was a combination of factors that contributed to their success.
团队的表现是多种因素共同作用的结果。
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2. The economist used a combination of statistical methods to analyze the data.
这位经济学家采用了统计方法来分析数据。
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3.The company's decision-making process involved a combination of intuition and logic.
该公司的决策过程结合了直觉和逻辑。