Now Charles Robert of the University of Bremen, Germany, and colleagues think they have an answer.
德国不莱梅大学的查尔斯·罗伯特和他的同事们认为他们得出了一种答案。
'we were stunned,' says Gerald Echterhoff, of Jacobs University Bremen, Germany, who led the research.
‘我们很吃惊，’主导这个研究的德国不来梅国际大学的杰纳瑞德·艾切赫夫说。
Scientists at the University of Bremen in Germany reported even less ice this summer than the NSIDC.
德国布莱梅大学的科学家们今年夏天所公布的数据比国家冰雪数据中心公布的这个还要低。
Scientists at the University of Bremen in Germany reported even less ice this summer than the NSIDC.
德国布莱梅大学的科学家们今年夏天所公布的数据比国家冰雪数据中心公布的这个还要低。
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