formerly used as a treatment to reduce excess blood (one of the four humors of medieval medicine)
indiscriminate slaughter
同义词:bloodbath, bloodshed, battue
bloodletting详细解释
blood.let.ting
n.(名词) Bloodshed. 流血,杀戳 The removal of blood, usually from a vein, as a therapeutic measure. 放血:放血,静脉切开放血,作为测量治疗效果的一个方法 The laying off of personnel or the elimination of resources. 消耗:人员或资源的消耗