1. Volcanic ash showered down on the town after the eruption. 火山喷发后,小城落了一层火山灰。
2. Etna's eruption history dates back as far as 1500 B.C. 埃特纳火山喷发的历史可以追溯到公元前1500年。
3. Suppose Mount Etna erupted everyday, or imagine that each eruption there kills thousands of people. 假设一下,埃特纳火山每天都在喷发,或者那里的每次喷发都导致数千人死亡。
4. Few volcanoes in the world have an eruption history so thoroughly documented by historical records. 世界上很少火山有详细记录的的火山爆发史。
5. The 1980 volcanic eruption of Mount Saint Helens, for example, sent mud and debris into several tributaries of the Columbia River. 例如,1980年圣海伦斯火山爆发,导致哥伦比亚河的几条支流产生泥石流现象。