They attacked different ecosystems in different ways on different timescales, ranging from days for reentering ejecta to months for dust in the stratosphere to years for sulfuric acid aerosols.

• 它们以不同的方式与时间尺度影响不同的生态系，例如，喷出的碎片只要数天就会降回地表，平流层的烟尘要花数个月，硫酸雨雾则要数年。