早先的冰芯分析显示气候的有冰龄和温暖的间冰期大致为100,000年为一个周期。
Previous analysis of ice cores has shown that the climate consists of ice ages and warmer interglacial periods roughly every 100,000 years.
科学家们表示现在百分之九十的北冰洋冰川只有一或者两年的冰龄。
Scientists say ninety percent of all Arctic sea ice is only one or two years old.
科学家们表示现在百分之九十的北冰洋冰川只有一或者两年的冰龄。
Scientists say ninety percent of all Arctic sea ice is only one or two years old.
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