Arbitrageurs could buy the high-interest currency today, lock in a future sale at the same price and pocket the extra interest from holding the currency until the forward contract is settled.
套利者可以在今天购买高利率的货币，并以相同的价格在未来锁定售出价格，然后在远期合同到期前从持有的货币中赚得额外的利息。
The primary customers are "unscrupulous doctors and cosmetologists who buy from the illicit producers or middlemen, often via the Internet, hoping to pocket the price difference," they say.
假药最先流入没医德的医生和精于伪造的商人手中，他们通常是通过互联网向假药生产者购买的。进而通过差价获利。
The costs of care, including the price of medicines, can be an absolute constraint for impoverished households, especially when expenses are covered by out-of-pocket payments.
医疗费用，包括药费，对贫穷家庭可构成绝对的制约，尤其当需要用现金支付费用时。
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