The wetland is in the amphibious staggered zone of transition, maintains the region ecological equilibrium and the environment stable huge function.
湿地处于水陆交错的过渡地带，具有维护区域生态平衡和环境稳定的巨大功能。
The middle school students in the social transition stage are facing complex cultural ecological environment and the value choice of pluralistic cultures.
处在社会转型时期的中学生，面对着复杂的文化生态环境和多元文化的价值选择。
As an important and special ecological system on the earth, wetland is one of important living environment of human being in the transition zone between terrestrial ecosystem and aquatic ecosystem.
湿地作为地球上一种重要且独特的生态系统，处于陆地生态系统与水生生态系统的过渡地带，是人类最重要的生存环境之一。
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