Yet considerable uncertainty remains about the magnitude of the impact of rising levels of atmospheric greenhouse gases on temperatures and climate. This uncertainty must be taken seriously when formulating strategies to combat climate change.
但是大气中不断升高的温室气体对温度和气候的影响程度还存在很大的不确定性。这种不确定性必须在制定战胜气候变化战略时认真加以考虑。