1N-COUNT 抽搐;痉挛 If someone has convulsions, they suffer uncontrollable movements of their muscles. 抽搐;痉挛
2N-COUNT (国家、体系、组织发生的)动乱，骚乱 If there are convulsions in a country, system, or organization, there are major unexpected changes in it. (国家、体系、组织发生的)动乱，骚乱
...the political convulsions that led to de Gaulle's return to power in May 1958.
促使戴高乐在1958年5月重新上台的政治动乱
...the great convulsion of the eighteenth century.