只有那些涉及货币交易的商品和服务才会被纳入国内生产总值。

Only those goods and services involved in monetary transactions are included in the GDP.

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罗德里克先生的模型也呈现了一个单一的可被交易的商品。

Mr Rodrik's model also assumes a single tradable good.

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美国eBay公司通过拍卖形式进行网上交易的商品约占产品总量的一半。

EBay in the US generates roughly half of its Gross Merchandise Volume through auction-style transactions.

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These then became the objects of trade, of commerce, and of course of human diets and these had nutritional implications for people in different parts of the world.

这些随后成为了交易品和商品,当然,也成为了人们的日常饮食,对于来自世界不同地方的人们,这些食物都是有营养方面的考虑的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选