N-COUNT 达姆弹(一种弹头很软或中空的子弹,击中后爆炸成碎片,会造成严重伤害) A dum-dum or a dum-dum bullet is a bullet that is very soft or hollow at the front. Dum-dum bullets cause large and serious wounds because they break into small pieces and spread out when they hit someone. 达姆弹(一种弹头很软或中空的子弹,击中后爆炸成碎片,会造成严重伤害)