Meltwater Lakes in Antarctica Show Signs of Trouble(翻译)

ice mass - n. a large piece of ice

supraglacial lake – n. any pond of liquid water on the top of a glacier

ice sheet – n. a very large and thick area of ice that covers a region

ice shelf – n. a floating sheet of ice permanently attached to a land mass

glacier – n. an large areas of ice formed from falling snow and building up over the years