reduce是减小的意思,而relief则是缓解的意思,区别可以从以下例子看出:As the infection case reduces, covid 19 pandemic is reliefed, local government will easy the lockdown, let people back to normal. 随着感染病例的减少,covid 19大流行得到缓解,当地***将放宽封锁,让人们恢复正常。