But, as the UN Environment Program and climate modelers made clear in the run-up to the Cancún meeting, a significant emissions gap exists between what is being promised by countries and what is needed to keep the rise in global temperature below two degrees Celsius, let alone move towards the 1.5-degree threshold needed to protect low-lying island states.
但是联合国环境计划署和全球气候决策者在坎昆会议的准备阶段就明确指出，各国做出的承诺和将全球升温控制在两摄氏度以内的现实需求相比尚有很大差距，距离保护低洼岛国所需的1.5度气温界线差距自不必说。