大陆冰 meaning in Chinese

continental ice
land floe

There are about 98 thick continental ice sheet and 2 barren2 rock
南极约98覆盖着厚厚的大陆冰床， 2为光秃的岩石。
" it can happen in a short period of time if we look at the historical data , " usery said
但他说，在一万年前，海平面曾在五百年就上升了二十米- -这是一个相对短的时间跨度- -在大陆冰层解体之后。
If they had instead found crystalline rock , like that underlying most continental ice sheets , including east antarctica ' s , they would have concluded that the greater friction of that material had been inhibiting ice motion
反之，若冰原底下是晶状岩石，如同南极洲东部及多数大陆冰原的情况，可能就会因摩擦力较大而阻止积冰移动。