名词
中文翻译：变异
同义词：
['variation', 'variation', 'change', 'fluctuation']
例句：
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1. The varianceof the population is a key factor in economic growth.
人口的变动是经济增长的关键因素。
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2. The variance of the data is due to random errors.
数据的变化是由于随机误差导致的。
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3. The variance of the temperature is measured by the standard deviation.
温度的变动通过标准差来测量。