antidote
noun [ C ] uk/ˈæn.ti.dəʊt/ us/ˈæn.t̬i.doʊt/
解毒剂;（尤指）解毒药
a chemical, especially a drug, that limits the effects of a poison
Sales of nerve gas antidotes increased dramatically before the war. 在战争爆发前，神经毒气解毒剂销量激增。
矫正方法;缓解办法;对抗手段
a way of preventing or acting against something bad
Regular exercise is the best antidote to tiredness and depression. 经常锻炼是消除疲劳和抑郁的最好方法。