ecological barriers 中文意思是什麼
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The upper reaches of minjiang river served as ecological barriers and the major water supplying area to the chengdu plain
摘要岷江上游是成都平原的生態屏障和水源生命線。 -
Grassland not only provides the means for the local paternalists survival, but also is the ecological barriers of a national economic and social sustained development
草原不僅為當地牧民提供必需的生產資料，而且是一個國家經濟和社會可持續發展的生態屏障。
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