How can it be a violation of their privacy if a grocer sells their purchasing habits to a marketing firm?

如果一个杂货商把他们的购买习惯卖给一家营销公司，怎么可能侵犯他们的隐私呢?

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Both purchasing and marketing are brisk.

购销两旺。

《新英汉大辞典》

Such a deal would provide marketing and purchasing synergies, as well as input from Ghosn, who has proved he can turn around an automaker with Nissan.

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Technopak is advising groups of small shopkeepers in various places on how to get together and gain at least some advantage of scale in purchasing and marketing.

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Toyota is thinking it's going to take a fresh way of building cars and trucks, and Cho has tapped every department in Toyota-- engineering, purchasing, marketing, design--plus called on Toyota's suppliers to find it.

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