First the thesis discusses the concepts of forest certification and holds that the forest certification concepts are different for various certification systems.
本文首先讨论了森林认证的概念问题，提出不同体系的森林认证的概念是有区别的。
First the thesis discusses the concepts of forest certification and holds that the forest certification concepts are different for various certification systems.
本文首先讨论了森林认证的概念问题，提出不同体系的森林认证的概念是有区别的。
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