1·Before the eruptions, it was covered by forests of pine trees.
在火山爆发之前，它被松树林所覆盖。
2·For instance, eruptions during the snowball-Earth period are thought to have added sulfur particles to the atmosphere, blocking sunlight and cooling the planet.
比如，在“雪球地球”时期火山爆发使得空气中增加了硫粒子，它阻挡了太阳光线，使地球冷却。
3·Volcanic eruptions are measured on the Volcanic Explosivity Index, which goes from 0 (weakest) to 8 (strongest).
火山爆发用来衡量，这个指数从0(最弱)到8(最强)。
4·Many had returned to their homes to check on them as well as their farm animals after eruptions last week.
许多人返回自己的家园，检查火山爆发后的人们和他们的家畜。
5·The most seismically active region on the planet, the Ring of Fire has triggered countless quakes, volcanic eruptions and tsunamis.
火圈带中已经发生过无数次地震、火山爆发和海啸。