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月閱讀原文
柯林斯高階英漢雙解學習詞典釋義
VERB
使安心;使得到保證;打消…的疑慮
If you reassure someone, you say or do things to make them stop worrying about something.