付费物品；收费项目
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付费物品；收费项目；付费物品；收费项目
an item for which the customer pays, as opposed to one that is free
The store gives away a free gift with every paid item.
商店每售出一件付费商品即赠送一份免费礼品。
付费物品；收费项目
an item for which the customer pays, as opposed to one that is free
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Dictionary facts from AI_SUPPLEMENT.