If so, please get in touch with the store where you buy it and exchange a purchase.

该产品质量确实上乘，但万一有不良品请到所购商店联系，负责退还。

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When considering a link purchase or exchange, check the cache date of the page where your link will be located in Google.

当考虑一个购买或交换的链接时，请检查链接页面在google里的缓存的日期。

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A currency swap is the simultaneous purchase and sale of a given amount of foreign exchange for two different value dates.

货币币种交换(掉期)是按两个不同的起息日对一定数量的外汇同时进行买卖。

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The buying process (an exchange of letters can solidify a purchase in some locales) as well as the laws (foreigners cannot legally own property in certain areas) and restrictions (local laws deem certain materials or additions off limits) are often very local as well.

FORBES: International Property Buying Guide

In a statement to the Australian Stock Exchange Tuesday, Alinta said it had signed a power purchase agreement with Renewable Power Ventures (RPV) that would enable RPV to build the wind farm.

CNN: story.codringtonwindfarm.jpg

Using a stock exchange as a metaphor, the simplest way to explain this ecosystem is, websites have unsold inventory they pass to an ad exchange, similar to a stock exchange, and advertisers utilize demand side platforms, similar to a stock broker, to purchase the inventory.

FORBES: Kellogg Proves ROI Of Digital Programmatic Buying