n.(高山等上之)常积不消的冰；冰盖

=ice cap.

Some 95 percent of Antarctica is covered by an icecap averaging . 南极洲约百分之九十五的地方被厚度差不多的常积不消的冰覆盖着。

Antarctica also moves north, shedding its icecap. 南极洲也北移，甩掉冰冠。

Large, flat sheets of the icecap called ice shelves float in water near Antarctica. 大而扁平状的冰冠称作冰架，它们漂浮在南极洲周边的水域中。