Commercial market operations for cultural relics, shall be handled exclusively by an authorized department, with unified purchase and pricing and strengthened administration.

对文物商业市场，则应归口经营、统一收购、统一价格、加强管理。

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We will promote the centralized purchase and unified distribution of basic drugs.

推进基本药物集中采购和统一配送。

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You can also use the Unified Modeling Language (UML) class diagram to structure the purchase order information, as shown in Figure 2.

还可以使用统一建模语言(Unified Modeling Language, UML)类关系图来对购买订单信息进行结构化，如图2中所示。

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They track your online behavior and collate it into a unified profile, which follows you around the web, advising marketers about what you might be likely to purchase.

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