This year, temperatures in the polar area have been especially intense.

今年，极地地区的温度一直在急剧升高。

In the polar areas, sea ice levels increase during the winter and shrink in the summer.

在极地地区，冬季海冰冰面上升，夏季海冰冰面下降。

He said in a statement that " years of study" had gone into examining the polar area the rover will explore.

他在一份声明中表示，" 多年的研究" 已经对探测器将要探索的极地区域进行了勘探。"