各国可以将“长期限制地球温度的变化”作为更具雄心的目标，随后在各国之间分配排放权，最终在一个可以接受的水平内限制温度上升。
Nations could set the more ambitious goal of limiting the long-term change in the earth’s temperature, and then assign emissions rights among countries in such a way that will eventually limit temperature increases to an acceptable level.