a waterproof bag filled with ice: applied to the body (especially the head) to cool or reduce swelling
a large expanse of floating ice
例句
用作名词 (n.)
On the sonar repeater the visual display of the storm's turbulence appeared as sharp peaks and valleys representing movements of the shifting ice canopy. 声纳复示器上,流冰群的运动随风暴呈现出峰谷交替的状态。