huge aftershock强烈的余震
final aftershock最终余震
aftershock activity余震活动
aftershock sequences余震序列
aftershock response余振响应
aftershock area余震区
major aftershock主余震
N-COUNT（可数名词） Aftershocks are smaller earthquakes that occur after a large earthquake. 余震
N-COUNT（可数名词） People sometimes refer to the effects of an important event, especially a bad one, as the aftershock. 余波 [journalism] [usu with supp]
They were already under stress, thanks to the aftershock of last year's drought.
去年干旱的余波已经给他们造成压力了。