售出商品质量不符保证退款。
总利润的计算很简朴,是指用总收进减往售出商品及效力的成本。
Gross profit is a it calculation of income minus the cost of the goods of services sold.
当卖方承诺按规定的条件在规定的时间内售出商品时,他就会发出实盘。
Firm offers are make when a seller promises to sell goods at a stated price and within a stated time.
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