Professor Hou Ming, of Beijing University, is a volcanologist who has been warning for years that the world has not seen the worst nature can do.
Professor Hou Ming, of Beijing University, is a volcanologist who has been warning for years that the world has not seen the worst nature can do.
北京大学的火山专家侯明教授多年来一直警告人们自然对人类的最大灾难还没有降临。