This part illustrates the relationship between environment cost and international trade in theory, so derivates the present frame of environment measures.

此部分先论述了环境成本与国际贸易之间的关系并对其进行理论分析，从而引出了现在的环境措施体系框架。

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Therefore, how to coordinate the relationship between environment and free trade has become one important subject and an urgent task the international community facing with.

因此，如何既促进国际贸易又保护生态环境，便成为国际社会面临的一项迫切任务。

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The European Union wants negotiations about rules on how foreign investors can be treated, about anti-monopoly policy and about the relationship between trade and the environment.

BBC: Key trade talks in the balance