反复是重要的修辞手段，从它的位置角度结合实例分析反复的主要表现形式，并探讨它在修辞中的作用、功能和表达效果。
Reiteration is an important rhetorical device. From the perspective of its positions, this paper engages sufficient examples to analyze its main forms and the rhetorical effect it achieves.
研究中，笔者首先概述了绿色贸易壁垒产生的背景、原因、特征和表现形式，并结合相关研究理论对绿色贸易壁垒进行了深入解析。
Study, I first outlined the background of green trade barriers, causes, characteristics and manifestations, combined with theoretical research on green trade barriers have conducted in-depth analysis.
文章就此形式进行了多方面的阐述，并结合当前实施的具体情况提出了自己的一些建议。
There are many discussions about ESO in this paper. The author also makes some suggestions in the light of specific conditions.
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