Despite Mexico's skein of trade agreements, branching out into new markets is hard because of the accords' rules of origin.

尽管墨西哥加入了贸易协定，但是因为要遵守原产地规则，所以想要把规模扩大到新的市场还很困难。

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The contractual theory of the firm is the theory origin of studying corporate governance, mainly including the trade expenses theory, the group production theory and the principal-agent theory.

企业契约理论是研究公司治理结构的理论渊源，主要包括交易费用理论、团队生产理论和委托代理理论。

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The geographical indication identifies the place of departure of special products and plays an important role in maintaining the international trade order, consumer's interests and the fame of origin.

地理标记作为用来标明特定商品的来源地，在保护国际贸易秩序、维护消费者权益和产地声誉诸方面起了重要作用。

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"The new and unique aspect of this operation is that we acted against those who benefit from this trade at the point of origin of the trafficking, " he added later.

BBC: Eighty held in sex-trafficking swoop

Turkish police displayed evidence this week of what they say is the growing black-market trade of weapons of U.S. origin being smuggled across the border from neighboring Iraq.

NPR: U.S. Weapons from Iraq Making Their Way to Turkey

They were commonly used for trade, and could contain information about the origin or quantity of goods.

WSJ: The Ur-Metropolis | Uruk | Pergamon Museum | By A.J. Goldmann