求翻译：UNFCCC的目标是减少温室气体排放，减少人为活动对气候系统的危害，减缓气候变化，增强生态系统对气候变化的适应性，确保粮食生产和经济可持续发展是什么意思？

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UNFCCC goal is to reduce greenhouse gas emissions, reduce man-made activities on the climate system, climate change mitigation, and strengthen ecosystems to climate change adaptation to ensure food production and economic sustainable development

The UNFCCC goal reduces the greenhouse gas emissions, reduces the artificial activity to the climate system harm, slows down the climatic change, the enhancement ecosystem to the climatic change compatibility, guarantees the grain production and the economical sustainable development

UNFCCC's goal is to reduce greenhouse gas emissions and reduce the harm of human activities on the climate system, climate change mitigation, enhanced adaptation of ecosystems to climate change, to ensure that food production and sustainable economic development

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