Defrosting ice formed over the sea shatters and crackles like a sheet of breaking glass. 融冰在海面上支离破碎，嘎嘎作响，像一片破碎的玻璃。
Glacier caves such as these form when seasonal meltwater or geothermal vents cut fissures and channels through an ice sheet. 冰河洞穴像这些形状当季节性的融冰或地热的排气口削减裂隙和通道穿越一个大冰盖。
