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For example sales amount can sensibly be summed but unit price should be averaged.
例如，可以明显地对销售量进行汇总，但单位价格应当是平均值。
youdao
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And at a sales price of $12 per unit, the cost of unreliabili…
如果销售价格为$12每件，那产品…
youdao
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And at a sales price of $12 per unit, the cost of unreliabili…
如果销售价格为$12每件，那产品…
youdao