名词
中文翻译：Unknown
同义词：
['various', 'variable', 'variable quantity', 'variable quality']
例句：
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1. The weather is a variablefactor in the outcome of an experiment.
天气是实验结果的一个可变因素。
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2. Theprice of oil is a variable that affectsthe economy.
油价的变动会影响经济。
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3. Theamount of sugar in the mixture is avariable that needs to be controlled.
混合物中糖的量是一个需要控制的可变因素。