upheaval /ˌʌpˈhiːvəl/ noun plural upheavals
plural upheavals
Learner's definition of UPHEAVAL
1
: a major change or period of change that causes a lot of conflict, confusion, anger, etc.动乱;剧变;动荡时期 [noncount]
[count]
2
technical : an occurrence in which a part of the Earth's surface moves up forcefully(地球表面的)隆起 [count]
[noncount]