メガトン爆ばく弾だんじ字FuriganaMeanings1nounmegaton bombA nuclear weapon with an explosive yield measured in megatons of TNT.冷れい戦せん時じ代だいにはメガトン爆ばく弾だんの開かい発はつ競きょう争そうが激げき化かした。During the Cold War, the race to develop megaton bombs intensified.
