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通过观察火山,人们学会了预报火山喷发,并预防其灾难性后果。所有的火山都暗藏着许多谜与危险,既神秘难测,又危机四伏。
By observing volcanoes, people have learned to predict volcanic eruptions and prevent their catastrophic consequences. All the volcanoes are hidden in many mysteries and dangers, both mysterious and unpredictable, and crises.