war of attrition Since 1985 they had been fighting a bloody war of attrition with hundreds of casualties on both sides. 自1985年以来他们就一直在打一场血腥的消耗战，造成双方上百人伤亡。

attrition rate/rate of attrition Fifty volunteers left in the first year, a surprisingly high attrition rate. 第一年50名志愿者离开，减员率高得惊人。