detonation
noun [ C or U ] uk/ˌdet.ənˈeɪ.ʃən/ us/ˌdet̬.ənˈeɪ.ʃən/
引爆，起爆
the act of exploding something, or the fact of being exploded
Underground nuclear detonations are believed to have been carried out. 据信已经进行了地下核引爆。
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