A further challenge is the purchase of sufficient chelating agents: these are expensive drugs that are not available as generics.

另外一项挑战是购买足够的螯合剂：这属于昂贵的药物，没有非专利药。

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Buyer agents will charge either a fixed rate or a percentage fee of the purchase price for their expertise.

买方代理或者收取固定的服务费，或者按照购买价格收取一定比例的服务费。

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Participate in filtration of consumable material agent. Take charge in purchase order, business management and sales work from consumable material agents.

参与对所辖医院耗材代理商的筛选工作，负责耗材代理商的订货和相关的商务管理及耗材的销售。

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Due to existing relationships, travel agents can purchase tickets from consolidators and then sell them to consumers.

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Real estate agents who work for Redfin are paid a bonus for each home purchase or sale that they facilitate.

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M-PESA, launched in 2007, provides banking transactions without the need to visit a bank branch by using mobile phones and 19, 500 agents where customers can deposit and withdraw money, pay bills, purchase airtime and transfer money to other users and nonusers.

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