Value comes into contact with your marketplace at the top of the value chain.

价值在价值链的顶层同您的市场相联系。

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Efficiency comes into contact with your marketplace at the entry and exit points of the supply chain.

效率在供应链的入口和出口点同您的市场相联系。

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The beneficiaries and the donors are at the other ends of the chain - there is hardly any contact between those two ends.

捐赠者和受捐人在这个链条的两端，并且二者很难直接沟通。

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This is another link in a chain that shows that humans need some sort of contact in order to feel social obligations.

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The calculations indicate that the formation of longer chain hydrocarbons can happen in pure methane but the process is accelerated when the methane molecules are in contact with metal or carbon surfaces, e.g. diamond which act as catalysts for the methane-polymerisation to occur.

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