detonator
noun [ C ] uk/ˈdet.ən.eɪ.tər/ us/ˈdet̬.ən.eɪ.t̬ɚ/
起爆剂;起爆器
a small amount of explosive in a bomb that explodes first and causes a larger explosion, or an electrical device that is used from a distance to make a bomb explode
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