By studying marketing and communications, you could learn how to design, sell, package, and spread products and messages to your intended audience, whether it's locally or globally.

通过学习营销和沟通，你可以了解如何去设计、销售、打包和传播产品或信息给你的潜在客户，如果是在本地还是在全球范围内。

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Hiner rationalizes that the true purpose of these partnerships is probably to help spread the marketing message, not so much to sell iPads.

西纳解释道建立这些合作关系的真正目的是为了传播一种市场信息，而不是为了多销售些iPad。

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Steady markets would give investors fewer reasons to deal, and so traders would have less chance to earn the spread between sell and buy prices.

稳定的市场会减少投资者交易的次数，而且交易员赚取买卖价差的机会也会减少。

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Instead of charging a fixed transaction fee for clearing the rights, Corbis tries to buy low and sell high, capturing the spread as revenue.

FORBES: Image Enhancement

But this is now drying up, because new rules imposed by the Securities and Exchange Commission have shrunk the profits that market makers earn on the spread between buy and sell prices.

ECONOMIST: Stockbroking

Like all brokerage fees, the APT tax establishes a spread between the buy and sell price of every transaction.

FORBES: Balanced Budget And Comprehensive Tax Reform Made Simple ? The Automated Payment Transaction Tax