There was a period of excessive warmth which melted some of the polarice.
有段时期温度过高，融化了极地的部分冰层。
《柯林斯英汉双解大词典》
2
With the temperature rising, polarice will melt at a faster rate.
随着温度的上升，极地的冰会以更快的速度融化。
3
Eventually, Agassiz and others convinced geologists and the general public that a great continental glaciation had extended the polarice caps far into regions that now enjoy temperate climates.