总效用等于平均效用和橙子数量的乘积——即是说，这是平均效用的定义，该定义符合我们平常所用“平均”一词的含义。
Total utility is equal to the product of the average utility and the number of oranges — i. e. , this is a definition of average utility consistent with our usual use of the term average.
总效用等于平均效用和橙子数量的乘积——即是说，这是平均效用的定义，该定义符合我们平常所用“平均”一词的含义。
Total utility is equal to the product of the average utility and the number of oranges — i. e. , this is a definition of average utility consistent with our usual use of the term average.
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