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流域生态环境安全是保证水资源的关键。
Valley ecological environment safety is the key to the guarantee of water resources.
youdao
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流域生态环境安全是确保水资源的关键。
Ecological and environmental safety is the key to ensuring water.
youdao
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流域生态环境安全是确保水资源的关键。
Ecological and environmental safety is the key to ensuring water.
youdao