1N-UNCOUNT (对敌人造成的)削弱,耗损Attrition is a process in which you steadily reduce the strength of an enemy by continually attacking them. (对敌人造成的)削弱,耗损 [formal]
The rebels have declared a ceasefire in their war of attrition against the government.
2N-UNCOUNT 人员减缩;人员流失 At a university or place of work, attrition is the decrease in the number of students or employees caused by people leaving and not being replaced. 人员减缩;人员流失 [mainly US]
The company plans to cut a quarter of its workforce over six years through natural attrition and fewer hirings.