The US Geological survey says it's been calm, then eruptive, then restless, and that it's been in a constant state of change since 2018. And 2018 was when it caused widespread destruction in the region.
美国地质调查局称,它先平静,然后爆发,然后躁动,自2018年以来一直处于不断变化的状态。而2018年正它该地区造成大范围破坏的时候。