The research on environment security mainly rested on the stage of qualitative description on environment security or quantitative assessment of natural eco - environment security.
环境安全研究目前主要停留在定性描述或定量评价自然生态安全阶段。
The research on environment security mainly rested on the stage of qualitative description on environment security or quantitative assessment of natural eco - environment security.
环境安全研究目前主要停留在定性描述或定量评价自然生态安全阶段。
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