1·The caldera is considered an active volcano.
该破火山口被认为是活火山。
1·When the enormous magma chamber at Santorini finally collapsed to form the existing caldera, enormous tsunamis (tidal waves) spread outward in all directions.
圣多里尼火山的巨大岩浆房最后倒塌,形成了现有的喷火山口,巨大的海啸(潮汐波)向各个方面向外伸展。