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简介：圣海伦斯火山位于地壳活动频繁的环太平洋火山带上,1980年5月18日是其有史以来最大的一次喷发。在火山喷发后的几周里,研究人员在现场发现一种小型啮齿动物——北囊鼠活了下来,而这一地区的大多数动物都消失了。它们是如何承受住靠近喷发中心的酷热？收起
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