Studies of certain fossil distributions and of the pollen of certain temperate plants suggest decreases of a degree or two in both summer and winter temperatures and, therefore, that we may be in the declining climatic phase leading to glaciation and exti
Studies of certain fossil distributions and of the pollen of certain temperate plants suggest decreases of a degree or two in both summer and winter temperatures and, therefore, that we may be in the declining climatic phase leading to glaciation and exti
对某些化石分布以及某些温带植物花粉的研究表明，夏天和冬天的温度下降了一到两度，所以，我们可能正处于气温日渐降低、冰川和灭绝即将来临的过程之中。