- ecological balance a most important problem
- 生态平衡: ecological equilibrium; ecol ...
- 重要: important; significant; majo ...
- 生态平衡: biological balance; ecologic balance; ecologic equilibrium; ecological balance; ecological equilibrium; ecological equilibrlum; ecological homeostasis; ecologicalbalance; ecosystemic equipoise; eubiosis; natural balance; the balance of nature
- 保持生态平衡: keeecological balance; keep ecological balance; keethe balance of nature
- 城市生态平衡: balance of city ecosystem
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