Italy's Mount Etna shot a tower of ash more than seven miles into the air.
意大利的埃特纳火山向空中喷发,形成了一个7英里多高的火山灰塔。
英语百科
Shot tower
A shot tower is a tower designed for the production of shot balls by freefall of molten lead, which is then caught in a water basin. The shot is used for projectiles in firearms.