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act of barbarity; barbarism; brutality; savagery
戦時中の蛮行は歴史に深い傷を残した。
The wartime atrocities left deep scars in history.
蛮行を繰り返す者は厳しく裁かれるべきだ。
Those who repeatedly commit barbarous acts should be severely judged.
国際社会は蛮行に対して声を上げた。
The international community raised its voice against the atrocities.