I let a salesclerk fool me into buying a discontinued model.

我被一个售货员骗了，他让我买了一个停产的型号。

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With the acquisition, AOL is buying into the new publishing model that the Huffington Post represents.

通过此次收购，美国在线买到了以《赫芬顿邮报》为代表的新出版模式。

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If the customer is used to buying development with a fixed price model, or has formal guidelines, it can be quite a big-or even impossible-change for the customer.

如果客户习惯于以固定价格的模型购买开发工作，或者具有正式的指导原则，则采用敏捷开发流程对客户来说是非常大——甚至不可能——的更改。

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Some insiders even believe the group buying model will never make money in China due to heavy competition.

FORBES: Groupon's Foray Into China Sounds Like a Disaster

He considered buying an advanced SLR model from Nikon but opted for a mirrorless model from Sony.

WSJ: Camera Makers Enter New Mirrorless Arena for Serious Photographers

Instead of buying parts for his Model Ts from suppliers--each with its own price markup--he could keep cars affordable by making the parts himself.

FORBES: Magazine Article