Regardless, all these complex measures had the same psychological purpose: to reassure people that the free fall would stop and, thereby, curb the fear that would perpetuate (使持久) a free fall.
出自-2013年6月阅读原文
柯林斯高阶英汉双解学习词典释义
VERB
使(尤指不好的情况、制度、信仰等)继续,延长
If someone or something perpetuates a situation, system, or belief, especially a bad one, they cause it to continue.