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It was two days before Christmas, and David wanted to give a card to everyone in his class.

离圣诞节还有两天，大卫想给他班上的每个人发一张卡片。

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Before he could change his mind I whipped out my credit card, all the while watching as David beamed with pride.

还没等他改变主意，我很快拿出我的信用卡，一直冲着大卫骄傲地微笑。服务员迅速完成交易，我们就离开了。每走几步，我们就停下来看手镯。

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Berkeley economist David Card, that upset the conventional wisdom that raising the minimum wage depresses job creation.

FORBES: Obama Nominee Pulled Back on Minimum Wage Defense

And it is also consistent with previous work from David Card et al on school competition in Canada.

FORBES: Lessons on School Choice from Sweden

Jupiter analyst David Card said Google's decision to stop people from watching content they had already bought from the service was a mistake.

BBC: NEWS | Technology | Google shuts down video service