We do not know whether we live in a postglacial period or an interglacial period. 我们不知道自己是生活在后冰川期还是生活于间冰期。
Although a complex combination of all three orbital cycles controls CO2 variations, the trends during previous interglacial intervals were all surprisingly similar to one another. 虽然二氧化碳的变化受到三种轨道周期的复杂组合所控制，但先前各个间冰期的趋势都非常相似。
