周一发布的联合国报告指出，各国对《巴黎协定》的现有贡献力度不足，这些贡献最多只能使全球温室气体排放量在本世纪二十年代里减少2.6%。
英文原文如下：
NDCs fall "miles short" of emission cuts to meet Paris goals, UNFCCC warns
Existing national contributions to the Paris Agreement are unsurprisingly inadequate, at most leading to a mere 2.6% decline in global greenhouse gas emissions over the 2020s, according to a UN report released on Monday.
