recently, scientists from nasa and the national snow and ice data center described another way arctic sea ice is changing: the summer melt season is getting significantly longer.
最近,美国国家航空航天局(nasa)以及国家冰雪数据中心(nsidc)的科学家从另一个角度描述了北冰洋海冰的这种变化,即(该地区)夏季融冰期正在显着的变长。