second-wave       
adjective uk/ˌsek.əndˈweɪv/ us/ˌsek.əndˈweɪv/
 第二波的
used to refer to a group of people that is the second of several groups to do something, or to the second part of a situation or an event
  Many second-wave feminists wrote very seriously about motherhood. 许多第二波女权主义者非常认真地写了关于母性的文章。 
 If we have a second-wave recession, it will be catastrophic for the country. 如果出现第二波经济衰退,这对国家来说将是灾难性的。 
 - More examples
 - He expects several hundred more second-wave immigrants to move to the area.
 - When second-wave feminism emerged in the 1960s, many women thought their prayers had been answered.
 - Second-wave strikes would originate from carriers like the USS Eisenhower.
 - The state's second-wave coronavirus plan was widely criticized.