The need for international action, therefore, stems from two important observations arising out of the IPCC’s work. First, if we do not mitigate emissions of GHGs, the negative effects of climate change will be difficult to reverse, implying great hardship and possibly danger to mankind and other species.
因此，采取国际行动的必要性来自IPCC的两个重要观察结果。首先，如果我们不缓解温室气体的排放，气候变化的负面影响将很难逆转，对人类和其他物种可能造成巨大的苦难，甚至危险。