在马拉自然维护区，或许发作着自然界最为壮观的事情，那就是一年一度的大迁移。
It is in the Mara that perhaps the most spectacular event of the natural world takes place.
自然保护区不仅是一个国家的自然综合体的陈列馆，野生动植物的基因库，而且也是维护环境安全的主力军。
Nature reserve not only is a nature museum and a gene bank , but also plays a main force to protect the environmental security.
辉河湿地作为内蒙古辉河国家级自然保护区的主体，在维护区域生态平衡方面发挥着极其重要的作用。
Huihe wetland is the main part of Huihe National Nature Reserve, and playing a very important role in regional ecological balance.
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